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範例:滑動與翻轉[81日大]

水平桌面上有一邊長為L的正立方體,今在此立方體的某垂直面(x–z平面)的正中央繫 一繩,以此繩拉立方體,繩在y-z平面且與水平的y方向成θ角,如右圖所示。當拉力F逐漸增大時,發現在立方體開始滑動的同時,亦開始以ｘ軸發生轉動。設桌面與立方體間的靜摩擦係數為us之值為何。[81日大]

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Posted in 摩擦力, 歷屆物理考題.

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By admin – 2010 年 10 月 06 日

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