問題詳情

3. A thin uniform rod of mass M and length L is positioned vertically above an anchored frictionless pivot point, as shown below,and then allowed to fall to the ground. At what speed does the free end of the rod strike the ground?


(A)


(B)


(C)


(D)


(E)

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)