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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
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
參考答案
上一篇 :
4.當一個剛體受到兩個線性外力而達到靜平衡,請問下列何者不符合該兩力的特徵?(A)該兩力的大小相同 (B)該兩力的作用線在同一直線上(C)該兩力的方向相反 (D)該兩力是重疊的
下一篇 :
59. These compounds are: (A) enantiomers (B) diasteroisomers (C) conformers (D) geometrical isomers
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