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範例:牛頓運動定律與滑輪

一人m1公斤,站在m2公斤之平台上, 如圖滑輪與繩均無質量,且無摩擦,則(1) 此人至少要施多少力才能將人與平臺拉起? 人能拉起平臺之必要條件為何?(2)人欲使自己與平臺以加速度g/2上升,則需用力若干?此時人作用於平臺之力為多少?


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Posted in 牛頓第二運動定律.

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By admin – 2010 年 10 月 29 日

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