{"id":13763,"date":"2021-05-04T09:33:49","date_gmt":"2021-05-04T04:03:49","guid":{"rendered":"https:\/\/learnsteer.sasnaka.org\/science\/?p=13763"},"modified":"2022-07-06T09:38:26","modified_gmt":"2022-07-06T04:08:26","slug":"03-08-04","status":"publish","type":"post","link":"https:\/\/learnsteer.sasnaka.org\/science\/advanced-level-science\/03-08-04\/","title":{"rendered":"03.08.04 &#8211; \u0dc3\u0dd2\u0dbb\u0dc3\u0dca \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dbd\u0dd2\u0dad\u0dba \u0dc4\u0dcf \u0dc3\u0db8\u0dca\u0db6\u0db1\u0dca\u0db0 \u0d9c\u0dd0\u0da7\u0dbd\u0dd4 \u0dc0\u0dd2\u0dc3\u0db3\u0dd3\u0db8-2"},"content":{"rendered":"\r\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\r\n<div class=\"wp-block-button is-style-shadow\"><a class=\"wp-block-button__link\" style=\"border-radius: 15px\" href=\"https:\/\/drive.google.com\/uc?id=19SbancDL-iW13afzODRyT2zlvIgLblbF&amp;export=download\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0d8b\u0daf\u0dcf: \u00a0 \u00a0 \u0dc3\u0dca\u0d9a\u0db1\u0dca\u0db0\u0dba m kg \u0dc0\u0db1 A \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca l m \u0dc0\u0db1 \u0d85\u0dc0\u0dd2\u0dad\u0db1\u0dca\u200d\u0dba \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0d9a\u0dd2\u0db1\u0dca \u0d85\u0da0\u0dbd O \u0dbd\u0d9a\u0dca\u0dc2\u0dba\u0d9a\u0da7 \u0d91\u0dbd\u0dca\u0dbd\u0dcf \u0d87\u0dad. u \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba\u0dd9\u0db1\u0dca \u0dad\u0dd2\u0dbb\u0dc3\u0dca\u0dc0 \u0da0\u0dbd\u0dd2\u0dad\u0dc0\u0db1 \u0dc3\u0dca\u0d9a\u0db1\u0dca\u0db0\u0dba 2m kg \u0dc0\u0db1 B \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca A \u0dc4\u0dd2 \u0dc0\u0dd0\u0daf\u0dd3 \u0dc4\u0dcf\u0dc0\u0dda.\u0dc3\u0d82\u200d\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0d9a\u0dca\u0dc2\u0dab\u0dd2\u0d9a\u0dc0 \u0db1\u0dd2\u0dc3\u0dbd \u0dc0\u0db1 \u0dc0\u0dd2\u0da7 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0 \u0dc3\u0dd2\u0dbb\u0dc3\u0da7 60\u02da \u0d9a\u0dd2\u0db1\u0dca \u0d86\u0db1\u0dad \u0dc0\u0dda. <span class=\"wp-katex-eq\" data-display=\"false\">u=\\frac{3\\sqrt{gl}}2<\/span>\u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1. \u03b8 = 60 \u0dc0\u0dd2\u0da7 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0dda \u0d86\u0dad\u0dad\u0dd2\u0dba <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{3mg}2<\/span>\u00a0 \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"182\" height=\"176\" class=\"wp-image-18979\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-287.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-287.png 182w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-287-150x145.png 150w\" sizes=\"(max-width: 182px) 100vw, 182px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"110\" height=\"177\" class=\"wp-image-18980\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-288.png\" alt=\"\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"186\" height=\"153\" class=\"wp-image-18981\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-289.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-289.png 186w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-289-150x123.png 150w\" sizes=\"(max-width: 186px) 100vw, 186px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0d9c\u0db8\u0dca\u200d\u0dba\u0dad\u0dcf \u0dc3\u0d82\u0dc3\u0dca\u0dae\u0dd2\u0dad\u0dd2 \u0db1\u0dd2\u0dba\u0db8\u0dba\u0dd9\u0db1\u0dca<\/p>\r\n\r\n\r\n\r\n<p>m\u00d70 + 2m\u00d7u = 3m\u00d7v<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v =<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2u}3<\/span>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 (1)<\/p>\r\n\r\n\r\n\r\n<p>\u0dc1\u0d9a\u0dca\u0dad\u0dd2 \u0dc3\u0d82\u0dc3\u0dca\u0dae\u0dd2\u0dad\u0dd2 \u0db1\u0dd2\u0dba\u0db8\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>-3mgl + \u00bd\u00d73mv\u00b2 = -3mgl cos 60 + \u00bd\u00d73mg\u00d7v<sub>1<\/sub>\u00b2<\/p>\r\n\r\n\r\n\r\n<p>\u0db8\u0dd9\u0dc4\u0dd2 v<sub>1<\/sub> = 0 \u0dc0\u0dda.(\u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0d9a\u0dca\u0dc2\u0dab\u0dd2\u0d9a\u0dc0 \u0db1\u0dd2\u0dc1\u0dca\u0da0\u0dbd \u0dc0\u0db1 \u0db6\u0dc0 \u0daf\u0dd3 \u0d87\u0dad\u0dd2 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca)<\/p>\r\n\r\n\r\n\r\n<p>-3mgl + \u00bd\u00d73mv\u00b2 = -3mgl cos 60\u02da<\/p>\r\n\r\n\r\n\r\n<p>-3mgl + \u00bd\u00d73mv\u00b2 = -3mgl\u00d7\u00bd<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00b2 = gl<\/p>\r\n\r\n\r\n\r\n<p>(1) \u0db1\u0dca \u0d86\u0daf\u0dda\u0dc1\u0dba,<\/p>\r\n\r\n\r\n\r\n<p>(<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2u}g<\/span>)\u00b2 = gl<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{9gl}4<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{3\\sqrt{gl}}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0da7 \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba \u0daf\u0dd9\u0dc3\u0da7<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma\u00a0<\/p>\r\n\r\n\r\n\r\n<p>T \u2013 3mg cos 60\u02da = 3mv<sub>1<\/sub><sup>2<\/sup>\/l<\/p>\r\n\r\n\r\n\r\n<p>v<sub>1<\/sub> = 0 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>T = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{3mg}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>02 \u0d85\u0dc0\u0dc3\u0dca\u0dae\u0dcf\u0dc0 ; u\u00b2 = 2gl \u0dc0\u0dd2\u0da7,<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dc0\u0dd2\u0da7 ,cos \u03b8\u2081 = 0\u00a0 \u0daf,\u00a0 cos \u03b8\u2082 = 0 \u0daf \u0dc0\u0dda.<\/li>\r\n<li>cos \u03b8\u2081 =\u00a0 cos 90\u02da, cos \u03b8\u2082 = cos 90\u02da<\/li>\r\n<li>\u03b8\u2081 = 90\u02da, \u03b8\u2082 =90\u02da \u00a0 \u0daf \u0dc0\u0dda.<\/li>\r\n<li>\u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0 \u0dad\u0dd2\u0dbb\u0dc3\u0dca\u0dc0\u0db1 \u0dc0\u0dd2\u0da7 \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba \u0dc4\u0dcf \u0d86\u0dad\u0dad\u0dd2\u0dba \u0dba\u0db1 2 \u0db8 0 \u0dc0\u0dd3\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dda.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"293\" height=\"105\" class=\"wp-image-18982\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-290.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-290.png 293w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-290-150x54.png 150w\" sizes=\"(max-width: 293px) 100vw, 293px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>03 \u0d85\u0dc0\u0dc3\u0dca\u0dae\u0dcf\u0dc0 ; 2gl&lt; u\u00b2 &lt; 5gl \u0dc0\u0dd2\u0da7,<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dc0\u0dd2\u0da7 ,cos \u03b8\u2081&lt; 0\u00a0 \u0daf,\u00a0 cos \u03b8\u2082&lt; 0 \u0daf \u0dc0\u0dda.<\/li>\r\n<li>cos \u03b8\u2081&lt; cos 90, cos \u03b8\u2082 &lt; cos 90\u02da<\/li>\r\n<li>\u03b8\u2081&gt; 90\u02da, \u03b8\u2082&gt;90\u02da<\/li>\r\n<li>\u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u03b8\u2081 \u0dc4\u0dcf \u03b8\u2082 \u0dba\u0db1 \u0daf\u0dd9\u0d9a\u0db8 \u0db8\u0dc4\u0dcf \u0d9a\u0ddd\u0dab \u0dc0\u0dda.<\/li>\r\n<li>cos \u03b8\u2081&lt; cos \u03b8\u2082<\/li>\r\n<li>\u03b8\u2081 &gt; \u03b8\u2082<\/li>\r\n<li>\u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u0db4\u0dbd\u0db8\u0dd4\u0dc0 \u0d86\u0dad\u0dad\u0dd2\u0dba \u0dc1\u0dd6\u0db1\u0dca\u200d\u0dba \u0dc0\u0dd3\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dda.<\/li>\r\n<li>\u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba \u0dc1\u0dd6\u0db1\u0dca\u200d\u0dba \u0dc0\u0dd3\u0db8\u0d9a\u0dca \u0dc3\u0dd2\u0daf\u0dd4 \u0db1\u0ddc\u0dc0\u0db1 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca \u0db8\u0dd9\u0dc0\u0dd2\u0da7 \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db4\u0dca\u200d\u0dbb\u0d9a\u0dca\u0dc2\u0dd2\u0db4\u0dca\u0dad\u0dba\u0d9a\u0dca \u0d86\u0d9a\u0dcf\u0dbb\u0dba\u0dd9\u0db1\u0dca \u0d9c\u0db8\u0db1\u0dca \u0d9a\u0dbb\u0dba\u0dd2.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"198\" height=\"192\" class=\"wp-image-18984\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-292.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-292.png 198w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-292-150x145.png 150w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0d8b\u0daf\u0dcf: \u00a0 \u00a0 \u0daf\u0dd2\u0d9c l \u0dc0\u0dd6 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0d9a\u0dd2\u0db1\u0dca \u0daf \u0dbd\u0d9a\u0dca\u0dc2\u0dca\u200d\u0dba\u0dba\u0d9a \u0d91\u0dbd\u0dca\u0dbd\u0dcf \u0d87\u0dad\u0dd2 \u0db6\u0dbb \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca \u0db4\u0dc4\u0dc5\u0db8 \u0dad\u0dd0\u0db1 \u0dc3\u0dd2\u0da7\u00a0 u \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba\u0dd9\u0db1\u0dca \u0db4\u0dca\u200d\u0dbb\u0d9a\u0dca\u0dc2\u0dda\u0db4\u0dab\u0dba \u0d9a\u0dbd \u0dc0\u0dd2\u0da7 120\u02da \u0d9a\u0ddd\u0dab\u0dba\u0d9a\u0da7 \u0db4\u0dc3\u0dd4 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0 \u0db6\u0dd4\u0dbb\u0dd4\u0dbd\u0dca \u0dc0\u0dda \u0db1\u0db8\u0dca u\u00b2= <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{7gl}2<\/span> \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"123\" height=\"217\" class=\"wp-image-18986\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-294.png\" alt=\"\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0dc1\u0d9a\u0dca\u0dad\u0dd2 \u0dc3\u0d82\u0dc3\u0dca\u0dad\u0dd2\u0dad\u0dd2 \u0db1\u0dd2\u0dba\u0db8\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>-mgl + \u00bdmu\u00b2 = mgl cos 60 + \u00bdmv\u00b2<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00b2 = u\u00b2 &#8211; 2gl &#8211; 2gl cos 60<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00b2 = u\u00b2 &#8211; 2gl (1 + \u00bd)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00b2 = u\u00b2 &#8211; 3gl\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba \u0daf\u0dd9\u0dc3\u0da7\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma\u00a0<\/p>\r\n\r\n\r\n\r\n<p>T + mg cos 60\u02da = 3mv<sup>2<\/sup>\/l<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0T = &#8211; mg cos 60\u02da +\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ml<\/span> (u\u00b2 &#8211; 2gl &#8211; 2gl cos 60\u02da)<\/p>\r\n\r\n\r\n\r\n<p>\u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0 \u0db6\u0dd4\u0dbb\u0dd4\u0dbd\u0dca\u0dc0\u0db1 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca T = 0 \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00 = u\u00b2 &#8211; 2gl -3lg cos 60\u02da<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 = 2gl + <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{3gl}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{7gl}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>04 \u0d85\u0dc0\u0dc3\u0dca\u0dae\u0dcf\u0dc0 ; u\u00b2 = 5gl \u0dc0\u0dd2\u0da7,<\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2081 =\u00a0<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2gl-u^2}{2gl}<\/span><\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2081 =\u00a0<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2gl-5gl}{2gl}<\/span><\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2081 =\u00a0<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{-3gl}{2gl}<\/span><\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2081 =\u00a0<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{-3}2<\/span><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dba \u0dc0\u0dd2\u0dba \u0db1\u0ddc\u0dc4\u0dd0\u0d9a. (-1 &lt; cos \u03b8 &lt; 1 \u0d85\u0dad\u0dbb \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca)<\/li>\r\n<li>\u0d91\u0db8\u0db1\u0dd2\u0dc3\u0dcf \u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba 0 \u0dc0\u0dd3\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0db1\u0ddc\u0dc0\u0dda.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2082 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2gl-u^2}{3gl}<\/span><\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2082 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2gl-5gl}{3gl}<\/span><\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2082 = -1<\/p>\r\n\r\n\r\n\r\n<p>cos \u03b8\u2082 = Cos 180\u02da<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u03b8\u2082 = 180\u02da<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u0d89\u0dc4\u0dc5\u0db8 \u0dbd\u0d9a\u0dca\u0dc2\u0dca\u200d\u0dba\u0dba\u0dda\u0daf\u0dd3 \u0d86\u0dad\u0dad\u0dd2\u0dba 0 \u0dc0\u0dd3\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dda.<\/li>\r\n<li>\u0db1\u0db8\u0dd4\u0dad\u0dca \u0db8\u0dd9\u0dc4\u0dd2\u0daf\u0dd3 \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dbd\u0dd2\u0dad\u0dba \u0dc3\u0db8\u0dca\u0db4\u0dd6\u0dbb\u0dca\u0dab \u0dc0\u0dd3\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dda.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"174\" height=\"158\" class=\"wp-image-18987\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-295.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-295.png 174w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-295-150x136.png 150w\" sizes=\"(max-width: 174px) 100vw, 174px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>05 \u0d85\u0dc0\u0dc3\u0dca\u0dae\u0dcf\u0dc0 ; u\u00b2 &gt; 5gl \u0dc0\u0dd2\u0da7,<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dc0\u0dd2\u0da7 , cos\u03b8\u2081&lt; -1 \u0daf,\u00a0 cos \u03b8\u2082&lt; -1 \u0daf \u0dc0\u0dda.<\/li>\r\n<li>\u0db8\u0dd9\u0db8 \u0d85\u0dc0\u0dc3\u0dca\u0dae\u0dcf 2 \u0daf\u0dd3 \u0db8 \u0db4\u0dc0\u0dad\u0dd2\u0db1 \u0d85\u0d9c\u0dba\u0db1\u0dca \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dd2\u0dba \u0db1\u0ddc\u0dc4\u0dd0\u0d9a\u0dd2 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca \u0db8\u0dd9\u0dc0\u0dd2\u0da7 \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba \u0dc4\u0ddd \u0d86\u0dad\u0dad\u0dd2\u0dba 0 \u0dc0\u0dd3\u0db8\u0d9a\u0dca \u0dc3\u0dd2\u0daf\u0dd4 \u0db1\u0ddc\u0dc0\u0dda. \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db4\u0dc4\u0dc3\u0dd4\u0dc0\u0dd9\u0db1\u0dca \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dbd\u0dd2\u0dad\u0dba \u0dc3\u0db8\u0dca\u0db4\u0dd6\u0dbb\u0dca\u0dab \u0d9a\u0dbb\u0dba\u0dd2.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"123\" height=\"148\" class=\"wp-image-18988\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-296.png\" alt=\"\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0d8b\u0daf\u0dcf: \u00a0 \u00a0 \u0daf\u0dd2\u0d9c a \u0dc0\u0dd6 \u0d85\u0dc0\u0dd2\u0dad\u0db1\u0dca\u200d\u0dba \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0d9a\u0dd2\u0db1\u0dca \u0d85\u0da0\u0dbd \u0dbd\u0d9a\u0dca\u0dc2\u0dca\u200d\u0dba\u0dba\u0d9a \u0dc3\u0dd2\u0da7 \u0d91\u0dbd\u0dca\u0dbd\u0db1 \u0dbd\u0daf \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0da7 \u0d91\u0dc4\u0dd2 \u0db4\u0dc4\u0dad\u0dca\u0db8 \u0db4\u0dd2\u0dc4\u0dd2\u0da7\u0dd3\u0db8\u0dda \u0dad\u0dd2\u0db6\u0dd9\u0db1 \u0dc0\u0dd2\u0da7 \u0dad\u0dd2\u0dbb\u0dc3\u0dca u \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba\u0d9a\u0dca \u0dbd\u0db6\u0dcf \u0daf\u0dd9\u0dba\u0dd2.<\/p>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li>\u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db4\u0dbb\u0dd2\u0db7\u0db8\u0dab \u0d87\u0dad\u0dd2 \u0d9a\u0dd2\u0dbb\u0dd3\u0db8\u0da7 \u0db1\u0db8\u0dca u\u00b2 \u2265 5gl \u0dc0\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4 \u0db6\u0dc0, \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0da7 \u0d85\u0da9\u0dd4\u0db8 \u0dc0\u0dc1\u0dba\u0dd9\u0db1\u0dca \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0dda \u0db6\u0dbb \u0db8\u0dd9\u0db1\u0dca 6 \u0d9c\u0dd4\u0dab\u0dba\u0d9a \u0d86\u0dad\u0dad\u0dd2\u0dba\u0d9a\u0dca \u0daf\u0dd0\u0dbb\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4 \u0db6\u0dc0\u0dad\u0dca \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/li>\r\n<li>u\u00b2 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{7ga}2<\/span> \u0db1\u0db8\u0dca \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0d91\u0dc4\u0dd2 \u0db4\u0dc4\u0dad\u0dca\u0db8 \u0dbd\u0d9a\u0dca\u0dc2\u0dba\u0dda \u0db8\u0da7\u0dca\u0da7\u0db8\u0dd9\u0db1\u0dca <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{3a}2<\/span> \u0d8b\u0dc3\u0d9a\u0daf\u0dd3 \u0dc0\u0dd8\u0dad\u0dca\u0dad\u0dcf\u0d9a\u0dcf\u0dbb \u0db4\u0dd9\u0dad \u0dc4\u0dd0\u0dbb \u0dba\u0db1 \u0db6\u0dc0\u0dad\u0dca \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"178\" height=\"206\" class=\"wp-image-18990\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-298.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-298.png 178w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-298-150x174.png 150w\" sizes=\"(max-width: 178px) 100vw, 178px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0dc1\u0d9a\u0dca\u0dad\u0dd2 \u0dc3\u0d82\u0dc3\u0dca\u0dae\u0dd2\u0dad\u0dd2 \u0db1\u0dd2\u0dba\u0db8\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>-mgh + \u00bdmu\u00b2 = mgh cos \u03b8 + \u00bdmv\u00b2<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v\u00b2 = u\u00b2 &#8211; 2ga + 2ga cos \u03b8 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (2)\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba \u0daf\u0dd9\u0dc3\u0da7\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma<\/p>\r\n\r\n\r\n\r\n<p>T \u2013 mg cos \u03b8 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{mv^2}a<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u00a0T \u2013 mg cos\u03b8 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>( u\u00b2 &#8211; 2ga + 2ga cos )<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0T = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga cos \u03b8)<\/p>\r\n\r\n\r\n\r\n<p>(i) \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db4\u0dbb\u0dd2\u0db7\u0dca\u200d\u0dbb\u0db8\u0dab\u0dba \u0dc0\u0dd3\u0db8\u0da7 \u0db1\u0db8\u0dca \u03b8 = 180 \u0daf, T \u2265 0 \u0daf \u0dc0\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4\u0dba.<\/p>\r\n\r\n\r\n\r\n<p>T =\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga cos \u03b8) \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p><span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga cos 180\u02da) \u2265 0 \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 &#8211; 2ga + 3ga cos 180\u02da\u2265 0<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 \u2265 2ga &#8211; 3ga cos 180\u02da<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 \u2265 2ga &#8211; 3ga cos(-1)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u\u00b2 \u2265 5ga \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<p>\u0d8b\u0db4\u0dbb\u0dd2\u0db8 \u0d86\u0dad\u0dad\u0dd2\u0dba \u0db4\u0dc0\u0dad\u0dd2\u0db1\u0dca\u0db1\u0dda \u0db4\u0dc4\u0dbd\u0db8 \u0dbd\u0d9a\u0dca\u0dc2\u0dca\u200d\u0dba\u0dba\u0dda \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>T<sub>\u0d8b\u0db4\u0dbb\u0dd2\u0db8<\/sub> = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga cos \u03b8 ) cos \u03b8 = 0 \u0dc0\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4\u0dba.<\/p>\r\n\r\n\r\n\r\n<p>T<sub>\u0d8b\u0db4\u0dbb\u0dd2\u0db8<\/sub> = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga \u00d7 1)<\/p>\r\n\r\n\r\n\r\n<p>T<sub>\u0d8b\u0db4\u0dbb\u0dd2\u0db8<\/sub> = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(5ga &#8211; 2ga + 3ga) \u00a0 ; \u00a0 (u\u00b2 = 5ga \u0db1\u0dd2\u0dc3\u0dcf)<\/p>\r\n\r\n\r\n\r\n<p>T<sub>\u0d8b\u0db4\u0dbb\u0dd2\u0db8<\/sub> = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span> \u00d7 6 ga<\/p>\r\n\r\n\r\n\r\n<p>T<sub>\u0d8b\u0db4\u0dbb\u0dd2\u0db8<\/sub> = 6mg \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<p>(ii) \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dbd\u0dd2\u0dad\u0dba\u0dd9\u0db1\u0dca \u0db8\u0dd2\u0daf\u0dd3\u0db8\u0da7 \u0db1\u0db8\u0dca T = 0 \u0dc0\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4\u0dba.<\/p>\r\n\r\n\r\n\r\n<p>\u0d91\u0dc0\u0dd2\u0da7 u\u00b2 =<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{7ga}2<\/span> \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0T = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(u\u00b2 &#8211; 2ga + 3ga cos \u03b8)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0T= <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(7ga2- 2ga + 3ga cos \u03b8)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac ma<\/span>(7ga &#8211; 4ga + 6ga cos \u03b8)<\/p>\r\n\r\n\r\n\r\n<p>6 cos \u03b8 = -3<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0cos \u03b8 = &#8211; \u00bd<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0cos \u03b8 = 120\u02da<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"95\" height=\"137\" class=\"wp-image-18991\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-299.png\" alt=\"\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>v\u00b2 = u\u00b2 &#8211; 2ga + 2ga cos \u03b8<\/p>\r\n\r\n\r\n\r\n<p>v\u00b2 = u\u00b2 &#8211; 2ga + 2ga cos 120<\/p>\r\n\r\n\r\n\r\n<p>v\u00b2 = u\u00b2 &#8211; 2ga + 2ga\u00d7-\u00bd<\/p>\r\n\r\n\r\n\r\n<p>v\u00b2 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{7ga}2<\/span> \u2013 2ga -ga<\/p>\r\n\r\n\r\n\r\n<p>v\u00b2 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{ga}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u00a0v = (<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{ga}2<\/span>)\u00bd<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db8\u0dd9\u0dc4\u0dd2\u00a0 v = (<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{ga}2<\/span>)\u00bd \u0dc0\u0db1 \u0db6\u0dd0\u0dc0\u0dd2\u0db1\u0dca \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0dc0\u0dd8\u0dad\u0dca\u0dad\u0dcf\u0d9a\u0dcf\u0dbb \u0db4\u0dd9\u0dad \u0dc4\u0dd0\u0dbb \u0dba\u0dba\u0dd2.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><strong>04. \u0dc3\u0dd2\u0dbb\u0dc3\u0dca \u0db1\u0dc5\u0dba\u0d9a\u0dca \u0dad\u0dd4\u0dc5 \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a \u0da0\u0dbd\u0dd2\u0dad\u0dba.<\/strong><\/p>\r\n\r\n\r\n\r\n<p>(2006 A\/L)<\/p>\r\n\r\n\r\n\r\n<p>\u0d8b\u0daf\u0dcf: \u0db4\u0dc4\u0dad \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0daf\u0dd0\u0d9a\u0dca\u0dc0\u0dd9\u0db1\u0dca\u0db1\u0dda \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba O, \u0d85\u0dbb\u0dba a \u0dc4\u0dcf \u0d9a\u0ddd\u0dab\u0dba 2(\u03c0 &#8211; \u03b1) \u0dc0\u0dd4 \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dcf\u0db4\u0dba\u0d9a \u0d86\u0d9a\u0dcf\u0dbb\u0dba\u0da7 \u0db1\u0db8\u0db1 \u0dbd\u0daf ABC \u0dc3\u0dd4\u0db8\u0da7 \u0dc3\u0dd2\u0dc4\u0dd2\u0db1\u0dca \u0db1\u0dc5\u0dba\u0d9a\u0dd2. \u0db8\u0dd9\u0dc4\u0dd2 \u03b1 \u0dc3\u0dd4\u0dc5\u0dd4 \u0d9a\u0ddd\u0dab\u0dba\u0d9a\u0dca \u0dc0\u0dd9\u0dba\u0dd2. A, C \u0dc0\u0dd2\u0dc0\u0dd8\u0dad \u0daf\u0dd9\u0d9a\u0dd9\u0dc5\u0dc0\u0dbb \u0d91\u0d9a\u0db8 \u0dad\u0dd2\u0dbb\u0dc3\u0dca \u0db8\u0da7\u0dca\u0da7\u0db8\u0dda \u0dad\u0dd2\u0db6\u0dd9\u0db1 \u0db4\u0dbb\u0dd2\u0daf\u0dd2 \u0db1\u0dc5\u0dba \u0dad\u0dd2\u0dbb\u0dc3\u0dca \u0dad\u0dbd\u0dba\u0d9a \u0dc3\u0dc0\u0dd2 \u0d9a\u0dbb\u0dba\u0dd2. \u0db1\u0dc5\u0dba\u0dda \u0db4\u0dc4\u0dad\u0dca\u0db8 \u0dbd\u0d9a\u0dca\u0dc2\u0dca\u200d\u0dba\u0dba\u0dda (B) \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca \u0dad\u0db6\u0dcf, \u0db1\u0dc5\u0dba \u0daf\u0dd2\u0d9c\u0dda \u0dad\u0dd2\u0dbb\u0dc3\u0dca u \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba\u0d9a\u0dd2\u0db1\u0dca \u0db4\u0dca\u200d\u0dbb\u0d9a\u0dca\u0dc2\u0dda\u0db4\u0dab\u0dba \u0d9a\u0dbb\u0dba\u0dd2. \u0db1\u0dc5\u0dba \u0daf\u0dd2\u0d9c\u0dda A \u0d9a\u0dd9\u0dc5\u0dc0\u0dbb\u0da7 \u0db4\u0dd0\u0db8\u0dd2\u0dab \u0d85\u0db1\u0dad\u0dd4\u0dbb\u0dd4\u0dc0 \u0db1\u0dd2\u0daf\u0dc4\u0dc3\u0dda \u0d9c\u0dd4\u0dbb\u0dd4\u0dad\u0dca\u0dc0\u0dba \u0dba\u0da7\u0dad\u0dda \u0db4\u0dca\u200d\u0dbb\u0d9a\u0dca\u0dc2\u0dd2\u0db4\u0dca\u0dad\u0dba\u0d9a\u0dca \u0dbd\u0dd9\u0dc3 \u0da0\u0dbd\u0db1\u0dba \u0dc0\u0dd3, C \u0d9a\u0dd9\u0dc5\u0dc0\u0dbb\u0dd2\u0db1\u0dca \u0db1\u0dd0\u0dc0\u0dad \u0db1\u0dc5\u0dba\u0da7 \u0d87\u0dad\u0dd4\u0dbd\u0dca \u0dc0\u0dd9\u0dba\u0dd2. \u0d85\u0d82\u0dc1\u0dd4\u0dc0 A \u0dc4\u0dd2\u0daf\u0dd3 \u0db1\u0dc5\u0dba\u0dd9\u0db1\u0dca \u0d89\u0dc0\u0dad\u0dca \u0dc0\u0db1 \u0dc0\u0dd2\u0da7 \u0d91\u0dc4\u0dd2 \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba \u0dc3\u0ddc\u0dba\u0dcf u<sup>2<\/sup> = ga [2 (1 + cos \u03b1) + sec \u03b1] \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1. \u0dad\u0dc0\u0daf \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0dc5\u0d9c\u0dcf \u0dc0\u0db1 \u0d8b\u0db4\u0dbb\u0dd2\u0db8 \u0d8b\u0dc3 O \u0da7 \u0d89\u0dc4\u0dc5\u0dd2\u0db1\u0dca <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>(cos \u03b1 + sec \u03b1) \u0db6\u0dc0\u0dad\u0dca \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"212\" height=\"226\" class=\"wp-image-18993\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-301.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-301.png 212w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-301-150x160.png 150w\" sizes=\"(max-width: 212px) 100vw, 212px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0dc1\u0d9a\u0dca\u0dad\u0dd2 \u0dc3\u0d82\u0dc3\u0dca\u0dae\u0dd2\u0dad\u0dd2 \u0db1\u0dd2\u0dba\u0db8\u0dba\u0dd9\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>B \u0dc4\u0dd2 \u0dc1\u0d9a\u0dca\u0dad\u0dd2\u0dba = C \u0dc4\u0dd2 \u0dc1\u0d9a\u0dca\u0dad\u0dd2\u0dba<\/p>\r\n\r\n\r\n\r\n<p>mg \u00d7 0 + \u00bd mu<sup>2<\/sup> = mg (a &#8211; a cos \u03b8) + \u00bd mv<sup>2<\/sup><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u<sup>2<\/sup> = 2g (a &#8211; a cos \u03b8) + v<sup>2<\/sup><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v<sup>2<\/sup> = u<sup>2<\/sup> &#8211; 2ga (1 &#8211; cos \u03b8) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (1)<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0d9c\u0dd0\u0da7\u0dbd\u0dd4\u0dc0\u0dda \u0daf\u0dd3 \u0d85\u0db7\u0dd2\u0dbd\u0db8\u0dca\u0db7 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0dc3\u0db3\u0dc4\u0dcf \u0db4\u0dca\u200d\u0dbb\u0d9a\u0dcf\u0dc1\u0db1\u0dba\u0d9a\u0dca \u0d85\u0dc3\u0dcf \u0db1\u0ddc\u0db8\u0dd0\u0dad\u0dd2 \u0d8b\u0dc0\u0daf, C \u0dc4\u0dd2\u0daf\u0dd3 \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db8\u0dad \u0d85\u0db7\u0dd2\u0dbd\u0db8\u0dca\u0db7 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0dc3\u0ddc\u0dba\u0db1 \u0d86\u0d9a\u0dcf\u0dbb\u0dba \u0d85\u0db4 \u0db4\u0dc4\u0dad \u0db4\u0dbb\u0dd2\u0daf\u0dd2 \u0dc3\u0dd2\u0daf\u0dd4 \u0d9a\u0dbb\u0db8\u0dd4.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>C \u0dc4\u0dd2\u0daf\u0dd3,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma<\/p>\r\n\r\n\r\n\r\n<p>R &#8211; mg cos \u03b8 = mv<sup>2<\/sup>\/r<\/p>\r\n\r\n\r\n\r\n<p>R &#8211; mg cos \u03b8 = m [u<sup>2<\/sup> &#8211; 2ga (1 &#8211; cos \u03b8)]\/ a \u00a0 ; \u00a0 (1) \u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0R = mg cos \u03b8 + (mu<sup>2<\/sup>\/a) &#8211; 2mg (1 &#8211; cos \u03b8)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0R = 3mg cos \u03b8 &#8211; 2mg + (mu<sup>2<\/sup>\/a)\u00a0<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0R = mg (3 cos \u03b8 &#8211; 2) + (mu<sup>2<\/sup>\/a)\u00a0<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\u0db1\u0dd0\u0dc0\u0dad \u0d9c\u0dd0\u0da7\u0dbd\u0dd4\u0dc0 \u0dc0\u0dd2\u0dc3\u0db3\u0db8\u0dd4.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u03b8 = (\u03c0 &#8211; \u03b1) \u0dc0\u0dd2\u0da7 (1) \u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>v<sub>1<\/sub><sup>2<\/sup> = u<sup>2<\/sup> &#8211; 2ga [1 &#8211; cos (\u03c0 &#8211; \u03b1)]<\/p>\r\n\r\n\r\n\r\n<p>v<sub>1<\/sub><sup>2<\/sup> = u<sup>2<\/sup> &#8211; 2ga [1 &#8211; (-cos \u03b1)]<\/p>\r\n\r\n\r\n\r\n<p>v<sub>1<\/sub><sup>2<\/sup> = u<sup>2<\/sup> &#8211; 2ga (1 + cos \u03b1)\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (2)<\/p>\r\n\r\n\r\n\r\n<p>AD \u0da0\u0dbd\u0dd2\u0dad\u0dba\u0da7,<\/p>\r\n\r\n\r\n\r\n<p>\u2191 S = ut + \u00bd at<sup>2<\/sup><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a00 = v<sub>1<\/sub> sin \u03b1 t &#8211; \u00bd gt<sup>2<\/sup><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a00 = v<sub>1<\/sub> sin \u03b1 &#8211; \u00bd gt<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0t = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2v_1\\sin\\alpha}g<\/span><\/p>\r\n\r\n\r\n\r\n<p>AD \u0da0\u0dbd\u0dd2\u0dad\u0dba\u0da7,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u2190 S = ut<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a02a sin \u03b1 = v<sub>1<\/sub> cos \u03b1 \u00d7 (<span class=\"wp-katex-eq\" data-display=\"false\">\\frac{2v_1\\sin\\alpha}g<\/span>)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0a = v<sub>1<\/sub> cos \u03b1 \u00d7 (v<sub>1<\/sub>\/g)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ag = v<sub>1<\/sub><sup>2<\/sup> cos \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u00a0ag\/cos \u03b1 = v<sub>1<\/sub><sup>2<\/sup><\/p>\r\n\r\n\r\n\r\n<p>ag\/cos \u03b1 = u<sup>2<\/sup> &#8211; 2ga (1 + cos \u03b1) \u00a0 ; \u00a0 (2) \u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0u<sup>2<\/sup> = ga [2 (1 + cos\u03b1) + sec \u03b1]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (3)<\/p>\r\n\r\n\r\n\r\n<p>A \u0dc3\u0dd2\u0da7 \u0d8b\u0db4\u0dbb\u0dd2\u0db8 \u0d8b\u0dc3 \u0dad\u0dd9\u0d9a\u0dca \u0da0\u0dbd\u0dd2\u0dad\u0dba\u0da7,<\/p>\r\n\r\n\r\n\r\n<p>\u2191 v<sup>2<\/sup> = u<sup>2<\/sup> + 2as<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a00 = (v<sub>1<\/sub> sin \u03b1)<sup>2<\/sup> &#8211; 2gs \u00a0 ; \u00a0 s \u0dba\u0db1\u0dca\u0db1 \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0dbd\u0d9a\u0dd4\u0dab\u0dd4 \u0d9a\u0ddc\u0da7 \u0d87\u0dad.<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a00 = v<sub>1<\/sub><sup>2<\/sup> sin<sup>2<\/sup> \u03b1 &#8211; 2gs<\/p>\r\n\r\n\r\n\r\n<p>2gs = v<sub>1<\/sub><sup>2<\/sup> sin<sup>2<\/sup> \u03b1\u00a0<\/p>\r\n\r\n\r\n\r\n<p>2gs = [u<sup>2<\/sup> &#8211; 2ga (1 + cos \u03b1)] sin<sup>2<\/sup> \u03b1<\/p>\r\n\r\n\r\n\r\n<p>2gs = {ga [2 (1 + cos\u03b1) + sec \u03b1] &#8211; 2ga (1 + cos \u03b1)} sin<sup>2<\/sup> \u03b1 \u00a0 ; \u00a0 (3) \u0db1\u0dca u<sup>2<\/sup> \u0dc3\u0db3\u0dc4\u0dcf\u00a0\u00a0\u00a0<\/p>\r\n\r\n\r\n\r\n<p>2gs = [2ga (1 + cos \u03b1) + ga sec \u03b1 &#8211; 2ga (1 + cos \u03b1)] sin<sup>2<\/sup> \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a02s = a sec \u03b1 sin<sup>2<\/sup> \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0s = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span> sec \u03b1 sin<sup>2<\/sup> \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u2234 O \u0dc3\u0dd2\u0da7 \u0d89\u0dc4\u0dc5 \u0db1\u0d9c\u0dd2\u0db1 \u0d8b\u0db4\u0dbb\u0dd2\u0db8 \u0d8b\u0dc3 = s + a cos \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span> sec \u03b1 sin<sup>2<\/sup> \u03b1 + a cos \u03b1<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0= <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>(2 cos\u03b1 + sec \u03b1 sin<sup>2<\/sup> \u03b1)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0<span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span> (cos\u03b1 + cos \u03b1 + sec \u03b1 sin<sup>2<\/sup> \u03b1)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>(cos\u03b1 + sec \u03b1 cos<sup>2<\/sup> \u03b1 + sec \u03b1 sin<sup>2<\/sup> \u03b1)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>[cos\u03b1 + sec \u03b1 (cos<sup>2<\/sup> \u03b1 + sin<sup>2<\/sup> \u03b1)]<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>(cos\u03b1 + sec \u03b1 \u00d7 1)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac a2<\/span>(cos \u03b1 + sec \u03b1)<\/p>\r\n\r\n\r\n\r\n<p>(2019 A\/L)<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"166\" height=\"186\" class=\"wp-image-18994\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-302.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-302.png 166w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-302-150x168.png 150w\" sizes=\"(max-width: 166px) 100vw, 166px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0d8b\u0daf\u0dcf: \u0dbb\u0dd6\u0db4\u0dba\u0dda \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0dcf \u0d87\u0dad\u0dd2 \u0db4\u0dbb\u0dd2\u0daf\u0dd2 \u0dc3\u0dd4\u0db8\u0da7 \u0dc3\u0dd2\u0dc4\u0dd2\u0db1\u0dca ABCDE \u0db6\u0da7\u0dba\u0d9a\u0dca \u0dc3\u0dd2\u0dbb\u0dc3\u0dca \u0dad\u0dbd\u0dba\u0d9a \u0dc3\u0dc0\u0dd2 \u0d9a\u0dbb \u0d87\u0dad. \u0daf\u0dd2\u0d9c <span class=\"wp-katex-eq\" data-display=\"false\">2\\sqrt3<\/span> a \u0dc0\u0dd6 AB \u0d9a\u0ddc\u0da7\u0dc3 \u0d8d\u0da2\u0dd4 \u0dc0\u0db1 \u0d85\u0dad\u0dbb \u0d91\u0dba B \u0dc4\u0dd2 \u0daf\u0dd3 \u0d85\u0dbb\u0dba 2a \u0dc0\u0dd6 BCDE \u0dc0\u0dd8\u0dad\u0dca\u0dad\u0dcf\u0d9a\u0dcf\u0dbb \u0d9a\u0ddc\u0da7\u0dc3\u0da7 \u0dc3\u0dca\u0db4\u0dbb\u0dca\u0dc1\u0d9a \u0dc0\u0dda. A \u0dc4\u0dcf E \u0d85\u0db1\u0dca\u0dad O \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba\u0da7 \u0dc3\u0dd2\u0dbb\u0dc3\u0dca\u0dc0 \u0d89\u0dc4\u0dc5\u0dd2\u0db1\u0dca \u0db4\u0dd2\u0dc4\u0dd2\u0da7\u0dba\u0dd2. \u0dc3\u0dca\u0d9a\u0db1\u0dca\u0db0\u0dba m \u0dc0\u0dd6 P \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca A \u0dc4\u0dd2 \u0daf\u0dd3 \u0db6\u0da7\u0dba \u0dad\u0dd4\u0dc5 \u0dad\u0db6\u0dcf \u0db1\u0dd2\u0dc1\u0dca\u0da0\u0dbd\u0dad\u0dcf\u0dc0\u0dba\u0dda \u0dc3\u0dd2\u0da7 \u0dc3\u0dd3\u0dbb\u0dd4\u0dc0\u0dd9\u0db1\u0dca \u0db8\u0dd4\u0daf\u0dcf \u0dc4\u0dbb\u0dd2\u0db1\u0dd4 \u0dbd\u0dd0\u0db6\u0dda. OA \u0dc3\u0db8\u0d9f \u03b8 (\u03c0\/3 &lt; \u03b8 &lt; 2\u03c0) \u0d9a\u0ddd\u0dab\u0dba\u0d9a\u0dca OP \u0dc3\u0dcf\u0daf\u0db1 \u0dc0\u0dd2\u0da7 P \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0dda \u0dc0\u0dda\u0d9c\u0dba, v \u0dba\u0db1\u0dca\u0db1, v<sup>2<\/sup> = 4ga (2 &#8211; cos \u03b8) \u0db8\u0d9c\u0dd2\u0db1\u0dca \u0daf\u0dd9\u0db1\u0dd4 \u0dbd\u0db6\u0db1 \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0dcf, \u0d91\u0db8 \u0db8\u0ddc\u0dc4\u0ddc\u0dad\u0dda \u0daf\u0dd3 P \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db8\u0dad \u0db6\u0da7\u0dba\u0dd9\u0db1\u0dca \u0d87\u0dad\u0dd2 \u0d9a\u0dbb\u0db1 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>P \u0d85\u0d82\u0dc1\u0dd4\u0dc0 A \u0dc3\u0dd2\u0da7 B \u0daf\u0d9a\u0dca\u0dc0\u0dcf \u0da0\u0dbd\u0dd2\u0dad\u0dba\u0dda \u0daf\u0dd3 \u0d91\u0dba \u0db8\u0dad \u0db6\u0da7\u0dba\u0dd9\u0db1\u0dca \u0d87\u0dad\u0dd2 \u0d9a\u0dbb\u0db1 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0daf \u0dc3\u0ddc\u0dba\u0db1\u0dca\u0db1.\u00a0<\/p>\r\n\r\n\r\n\r\n<p>P \u0d85\u0d82\u0dc1\u0dd4\u0dc0 B \u0db4\u0dc3\u0dd4 \u0d9a\u0dbb\u0db1 \u0dc0\u0dd2\u0da7 P \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0db8\u0dad \u0db6\u0da7\u0dba\u0dd9\u0db1\u0dca \u0d87\u0dad\u0dd2 \u0d9a\u0dbb\u0db1 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0d9a\u0dca\u0dc2\u0dab\u0dd2\u0d9a\u0dc0 \u0dc0\u0dd9\u0db1\u0dc3\u0dca \u0dc0\u0db1 \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"212\" height=\"273\" class=\"wp-image-18995\" src=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-303.png\" alt=\"\" srcset=\"https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-303.png 212w, https:\/\/learnsteer.sasnaka.org\/science\/wp-content\/uploads\/sites\/3\/2021\/06\/image-303-150x193.png 150w\" sizes=\"(max-width: 212px) 100vw, 212px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u0dbd\u0dd2\u0dc0\u0dd2\u0dba \u0dba\u0dd4\u0dad\u0dd4 \u0d85\u0dc0\u0dc3\u0dcf\u0db1 \u0db4\u0dd2\u0dc5\u0dd2\u0dad\u0dd4\u0dbb \u0dc3\u0db3\u0dc4\u0dcf, \u0db8\u0dd9\u0dc4\u0dd2 \u0daf\u0d9a\u0dca\u0dc0\u0dcf \u0d87\u0dad\u0dd2 \u0db4\u0dbb\u0dd2\u0daf\u0dd2 \u0dbd\u0d9a\u0dd4\u0dab\u0dd4 \u0db6\u0dd9\u0daf\u0dd3 \u0dba\u0dcf\u0db8 \u0dc3\u0dd2\u0daf\u0dd4 \u0dc0\u0dda.<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>P \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0da7 \u0dc1\u0d9a\u0dca\u0dad\u0dd2 \u0dc3\u0d82\u0dc3\u0dca\u0dae\u0dd2\u0dad\u0dd2 \u0db8\u0dd6\u0dbd\u0db0\u0dbb\u0dca\u0db8\u0dba \u0dba\u0dd9\u0daf\u0dd3\u0db8\u0dd9\u0db1\u0dca,<\/p>\r\n\r\n\r\n\r\n<p>\u00bd mv<sup>2<\/sup> + mg (2a cos \u03b8) = 0 + mg \u00d7 4a<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v<sup>2<\/sup> = 4ga (2 &#8211; cos \u03b8) \u00a0 ; \u00a0 (\u03c0\/3 &lt; \u03b8 &lt; 2\u03c0)<\/p>\r\n\r\n\r\n\r\n<p>\u0db1\u0dc5\u0dba \u0dad\u0dd4\u0dbd\u0da7 \u0dc0\u0dd8\u0dad\u0dca\u0dad \u0da0\u0dbd\u0dd2\u0dad\u0dba \u0dc3\u0db3\u0dc4\u0dcf,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\r\n\r\n\r\n\r\n<p>mg cos \u03b8 + R = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{mv^2}{2a}<\/span><\/p>\r\n\r\n\r\n\r\n<p><em>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/em>R = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac m{2a}<\/span>\u00a0 [4ga (2 &#8211; cos \u03b8)] &#8211; mg cos \u03b8\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 +<\/p>\r\n\r\n\r\n\r\n<p><em>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/em>R = mg (4 &#8211; 3 cos \u03b8) &gt; 0<em> \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 <\/em>(1)<\/p>\r\n\r\n\r\n\r\n<p>\u2234 \u0db8\u0dd9\u0db8 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 O \u0d9a\u0dda\u0db1\u0dca\u0daf\u0dca\u200d\u0dbb\u0dba \u0dc0\u0dd9\u0dad\u0da7 \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<p>\u0d8d\u0da2\u0dd4 \u0db1\u0dc5\u0dba \u0d87\u0dad\u0dd4\u0dc5\u0da7 \u0da0\u0dbd\u0dd2\u0dad\u0dba \u0dc3\u0db3\u0dc4\u0dcf,<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0F = ma\u00a0<\/p>\r\n\r\n\r\n\r\n<p>S &#8211; mg cos (\u03c0\/3) = m(0)<\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0S =\u00a0 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{mg}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>B \u0dc0\u0dd9\u0dad \u0dc5\u0d9f\u0dcf \u0dc0\u0dd3\u0db8\u0da7 \u0db8\u0ddc\u0dc4\u0ddc\u0dad\u0d9a\u0da7 \u0db4\u0dd9\u0dbb \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{mg}2<\/span><\/p>\r\n\r\n\r\n\r\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B \u0db4\u0dc3\u0dd4 \u0d9a\u0dbb \u0db8\u0ddc\u0dc4\u0ddc\u0dad\u0d9a\u0da7 \u0db4\u0dc3\u0dd4 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 = <span class=\"wp-katex-eq\" data-display=\"false\">\\frac52<\/span>mg<\/p>\r\n\r\n\r\n\r\n<p>\u0d92 \u0d85\u0db1\u0dd4\u0dc0, B \u0dc4\u0dd2 \u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dad\u0dd2\u0d9a\u0dca\u200d\u0dbb\u0dd2\u0dba\u0dcf\u0dc0 \u0dc0\u0dd2\u0dc1\u0dcf\u0dbd\u0dad\u0dca\u0dc0\u0dba\u0dd9\u0db1\u0dca <span class=\"wp-katex-eq\" data-display=\"false\">\\frac{mg}2<\/span> \u0dc3\u0dd2\u0da7 <span class=\"wp-katex-eq\" data-display=\"false\">\\frac52<\/span> mg \u0daf\u0d9a\u0dca\u0dc0\u0dcf \u0dc0\u0dd9\u0db1\u0dc3\u0dca \u0dc0\u0db1 \u0d85\u0dad\u0dbb \u0daf\u0dd2\u0dc1\u0dcf\u0dc0 \u0db4\u0dd2\u0da7\u0dad \u0dc3\u0dd2\u0da7 \u0d87\u0dad\u0dd4\u0dc5\u0dad\u0da7 \u0dc0\u0dd9\u0db1\u0dc3\u0dca \u0dc0\u0dda.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u0db4\u0dc3\u0dd4\u0d9c\u0dd2\u0dba \u0dc0\u0dd2\u0db7\u0dcf\u0d9c \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0db4\u0dad\u0dca\u200d\u0dbb\u0dba\u0db1\u0dca\u0dc4\u0dd2 2011(\u0db1\u0dc0), 2012(\u0db4\u0dd0\u0dbb\u0dab\u0dd2) \u0dc4\u0dcf 2017 \u0dba\u0db1 \u0d9c\u0dd0\u0da7\u0dbd\u0dd4 \u0dc0\u0dd2\u0dc3\u0daf\u0dd3\u0db8\u0dd9\u0db1\u0dca \u0db8\u0dd9\u0db8 \u0db4\u0dcf\u0da9\u0db8\u0dd9\u0dc4\u0dd2 \u0d85\u0da9\u0d82\u0d9c\u0dd4 \u0dc3\u0dd2\u0daf\u0dca\u0db0\u0dcf\u0db1\u0dca\u0dad\u0dba\u0db1\u0dca \u0db4\u0dd2\u0dc5\u0dd2\u0db6\u0daf\u0dc0\u00a0 \u0d85\u0dc0\u0db6\u0ddd\u0db0\u0dba\u0d9a\u0dca \u0dbd\u0db6\u0dcf \u0d9c\u0dad \u0dc4\u0dd0\u0d9a\u0dd2\u0dba.<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-spacer\" style=\"height: 100px\" aria-hidden=\"true\">\u00a0<\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\r\n<div class=\"wp-block-button is-style-shadow td_btn_normal\"><a class=\"wp-block-button__link\" style=\"border-radius: 15px\" href=\"https:\/\/drive.google.com\/uc?id=19SbancDL-iW13afzODRyT2zlvIgLblbF&amp;export=download\" target=\"_blank\" rel=\"noreferrer noopener\">\u0db4\u0dcf\u0da9\u0db8\u0dda \u0dc3\u0da7\u0dc4\u0db1 Download \u0d9a\u0dbb\u0d9c\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-spacer\" style=\"height: 100px\" aria-hidden=\"true\">\u00a0<\/div>\r\n\r\n\r\n\r\n<p>\u0d89\u0daf\u0dd2\u0dbb\u0dd2\u0dba\u0dda\u0daf\u0dd3 \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0d87\u0dad\u0dd4\u0dbd\u0dad\u0dca \u0dc0\u0db1\u0dca\u0db1\u0dda \u0db8\u0dd9\u0dad\u0db1\u0da7\u0dba\u0dd2.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-block-buttons-is-layout-flex\">\r\n<div class=\"wp-block-button is-style-shadow td_btn_normal\"><a class=\"wp-block-button__link\" style=\"border-radius: 15px\" href=\"https:\/\/drive.google.com\/uc?id=1Et8V2zU47bJMKqgyV7zfhq1OvM8J6YG3&amp;export=download\" target=\"_blank\" rel=\"noreferrer noopener\">\u0dad\u0dc0\u0dad\u0dca \u0db4\u0dca\u200d\u0dbb\u0dc1\u0dca\u0db1 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1.<\/a><\/div>\r\n<\/div>\r\n\r\n\r\n\r\n<div class=\"wp-block-spacer\" style=\"height: 100px\" aria-hidden=\"true\">\u00a0<\/div>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>\u0d8b\u0daf\u0dcf: \u00a0 \u00a0 \u0dc3\u0dca\u0d9a\u0db1\u0dca\u0db0\u0dba m kg \u0dc0\u0db1 A \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca l m \u0dc0\u0db1 \u0d85\u0dc0\u0dd2\u0dad\u0db1\u0dca\u200d\u0dba \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0d9a\u0dd2\u0db1\u0dca \u0d85\u0da0\u0dbd O \u0dbd\u0d9a\u0dca\u0dc2\u0dba\u0d9a\u0da7 \u0d91\u0dbd\u0dca\u0dbd\u0dcf \u0d87\u0dad. u \u0db4\u0dca\u200d\u0dbb\u0dc0\u0dda\u0d9c\u0dba\u0dd9\u0db1\u0dca \u0dad\u0dd2\u0dbb\u0dc3\u0dca\u0dc0 \u0da0\u0dbd\u0dd2\u0dad\u0dc0\u0db1 \u0dc3\u0dca\u0d9a\u0db1\u0dca\u0db0\u0dba 2m kg \u0dc0\u0db1 B \u0d85\u0d82\u0dc1\u0dd4\u0dc0\u0d9a\u0dca A \u0dc4\u0dd2 \u0dc0\u0dd0\u0daf\u0dd3 \u0dc4\u0dcf\u0dc0\u0dda.\u0dc3\u0d82\u200d\u0dba\u0dd4\u0d9a\u0dca\u0dad \u0d85\u0d82\u0dc1\u0dd4\u0dc0 \u0d9a\u0dca\u0dc2\u0dab\u0dd2\u0d9a\u0dc0 \u0db1\u0dd2\u0dc3\u0dbd \u0dc0\u0db1 \u0dc0\u0dd2\u0da7 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0 \u0dc3\u0dd2\u0dbb\u0dc3\u0da7 60\u02da \u0d9a\u0dd2\u0db1\u0dca \u0d86\u0db1\u0dad \u0dc0\u0dda. \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1. \u03b8 = 60 \u0dc0\u0dd2\u0da7 \u0dad\u0db1\u0dca\u0dad\u0dd4\u0dc0\u0dda \u0d86\u0dad\u0dad\u0dd2\u0dba \u00a0 \u0db6\u0dc0 \u0db4\u0dd9\u0db1\u0dca\u0dc0\u0db1\u0dca\u0db1. [&hellip;]<\/p>\n","protected":false},"author":73,"featured_media":16924,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[3687,3638,3631,42,3629],"tags":[4110,2724,3788,3953,4326,4324,4325,4094,2709,3722,2719],"class_list":{"0":"post-13763","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-03-08-circular-motion","8":"category-03-dynamics","9":"category-applied-mathematics","10":"category-advanced-level-science","11":"category-combined-mathematics","12":"tag-applies-maths","13":"tag-circular-motion","14":"tag-combined-mathematics","15":"tag-sanyuktha-ganithya","16":"tag-siras-wruththa-chalithaya","17":"tag-wiwaharika-ganithaya","18":"tag-wruththa-chalithaya","19":"tag-4094","20":"tag-2709","21":"tag-3722","22":"tag-2719"},"_links":{"self":[{"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/posts\/13763"}],"collection":[{"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/users\/73"}],"replies":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/comments?post=13763"}],"version-history":[{"count":10,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/posts\/13763\/revisions"}],"predecessor-version":[{"id":37587,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/posts\/13763\/revisions\/37587"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/media\/16924"}],"wp:attachment":[{"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/media?parent=13763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/categories?post=13763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learnsteer.sasnaka.org\/science\/wp-json\/wp\/v2\/tags?post=13763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}