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範例:摩擦力的動力學(一)動、靜摩擦力 [86日大]

甲乙丙三物體質量均為M,並排置於一平面上,並以一水平力F施於甲物體,如圖所示,設甲丙兩物體與桌面之摩擦可以忽略,而乙物體與桌面之靜摩擦係數為0.7,動摩擦係數為0.6,則下列敘述何者正確?(g為重力加速度) (A)F=0.5Mg,甲物體施於乙物體之力為0.5Mg(B)F=0.5Mg,乙物體施於丙物體之力為0.5Mg(C)F=3Mg,三物體之加速度均為0.8g (D)F=3Mg,甲物體施於乙物體之力為2.2Mg (E)F=3Mg,乙物體施於丙物體之力為0.8Mg  [86日大]

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Posted in 歷屆物理考題, 牛頓第二運動定律.

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