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範例:力矩[87日大]

一長度為d,質量可以略去的細桿,其中心點O固定,兩端各置有質量m2m的質點﹔細桿與鉛垂方向之夾角為 θ(如圖所示)。設重力加速度為g,則重力對O點所產生的力矩之量值為何?[87日大]

 
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Posted in 力矩與剛體靜力平衡, 歷屆物理考題, 轉動慣量與角動量.

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