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 ball is attached to a 0.80 m string and whirlay :s1 xfaplqr c1u+c+(ws79fed in a hori/2sb8*vdb gjn1w xnwss ( b1d.zontal circle at a constant speed of 6.0 m/s. See figure to the right. The work done on the baldw*2bs s.1(wvnb xds8 b jg1n/l 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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