問題詳情
7．汽车甲和汽车乙质量相等，以相等的速率沿同一水平弯道做匀速圆周运动，甲车在乙车的外侧。两车沿半径方向受到的摩擦力分别为f甲和f乙。以下说法正确的是
(A)f甲小于f乙
(B)f甲等于f乙
(C)f甲大于f乙
(D)f甲和f乙大小均与汽车速率无关
(A)f甲小于f乙
(B)f甲等于f乙
(C)f甲大于f乙
(D)f甲和f乙大小均与汽车速率无关
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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