本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
03.19: A heavy (2.0 kggme 74gvv:g:k) point-like objec9ervcsx; o6e1 t rests 2.0m from the center of a rough turntable as the turntable rotates. The period of the turntable's rotation is 5.0 seconds. The coefficient of kinetic friction between the object and turntable is 0.50, while the coefficient of static friction is 0.80. What is the magnitude of the force of friction actiscro; e6xe v91ng on the object?
A. $19.6N$
B. $16.0N$
C. $9.8N$
D. $6.3N$
E. $0N$
参考答案: D
本题详细解析:
暂无
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