Circular Motion (id: b2b9ca697)

本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
96.24: A 2.0-kg ballcx,cb82 i hk;h is 0 .gq4ep4mlyvattached to a 0.80 m string and whirled in a horizontal circle at a constant speed of 6.0 m/s. See figure to40y.gqe4v mlp the right. The work done on the ball during each revolution is:

A. $450J$
B. $90J$
C. $72J$
D. $16J$
E. $zero$


参考答案:  E


本题详细解析: 暂无

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