問題詳情
6.摩擦角是正交力與下列何者之間的夾角？
(A)外部推力
(B)摩擦力與正交力的合力
(C)外部推力與物體重力的合力
(D)摩擦力與物體重力的合力
(A)外部推力
(B)摩擦力與正交力的合力
(C)外部推力與物體重力的合力
(D)摩擦力與物體重力的合力
參考答案
無參考答案
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