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 the accompanying figure, 1d1q3qv : yo*s vluz*s*9k nsca force F is exerted at - y4o0 0ougbzyc-dx, a rp:dct.p4jj 8an angle of at8 rp0y ypojobdu 40j z,d4g.- :xcc-$\theta$. 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
| 
