本题目来源于试卷: Typical Forces，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.26: As shown in t 4m:.lsi6vjdf ;nu9nt 1sjmbt 96rqo8he accompanying figure, a force F is exerted at an angle of 9mqb 8strj1 6o$\theta$. The block of weight mg is initially moving the right with speed $v$. The coefficient of friction between the rough floor and the block is $\mu$. The frictional force acting on the block is:
A. μmg to the left
B. μmg to the right
C. μmg − Fsin θ to the left
D. μ(mg − Fsinθ) to the right
E. μ(mg + Fsinθ) to the right
参考答案: E
本题详细解析:
暂无
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