問題詳情
5.Block A, with mass ma, is initially at rest on a horizontal floor. Block B, with mass mb, is initially atrest on the horizontal top surface of A. The coefficient of static friction between the two blocks is Hh-Block A is pulled with a horizontal force It begins to slide out from under B if the force is greaterthan:
(A)mAg
(B) mBg
(C) u smig
(D)usmBg
(E)us(mA+mB)g
參考答案
答案：E
難度：計算中-1
書單：沒有書單，新增