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 kg) plhhla* :0b(t.t54t 3r oexsekoint-like object rests 2.0m from the center of a vez ta90lr. u;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, whilea9ztvul. 0r; e the coefficient of static friction is 0.80. What is the magnitude of the force of friction acting 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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