试题与答案

如图所示,两个完全相同的球A、B,重力大小均为G,两球与水平地面间的动摩擦因数均

题型:计算题

题目:

如图所示,两个完全相同的球A、B,重力大小均为G,两球与水平地面间的动摩擦因数均为µ,一根轻绳两端固定在两球上,在绳的中点施加一个竖直向上的拉力F,当绳被拉直后,两段绳间的夹角为α,问当F至少为多大时,两球将会发生滑动?

答案:

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