[題目] 台灣區聯合模擬考題
[領域] 力矩 角動量 圓周運動
[來源] 台灣區聯合模擬考題 3月2、3日
[題目] http://www.badongo.com/pic/9019201 第十題
[詳解] http://www.badongo.com/pic/9019215 第十題
[瓶頸]
我懂重力有造成力矩
張力不是通過之點 怎會有力矩呢?
所以我想請問為什麼 重力力矩 為什麼會和張力力矩 抵銷為零
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