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範例:摩擦力與靜力平衡

若一梯子長Ｌ,重可不計,靠在牆與地上,如圖,牆面光滑,一重Ｗ的人立於梯的中間。試求 (a)梯子與牆作用力若干? (b)梯子與地面作用力若干? (c)若人稍往上一爬,梯子便開始下滑,梯與地面的摩擦係數為何?

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Posted in 摩擦力.

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By admin – 2010 年 10 月 06 日

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