本题目来源于试卷: Typical Forces，类别为 美国物理杯赛(Physics Bowl)
[单选题]
14.20: A uniform block of i)ku q,h9l*d 2e g,onmm hye + ehy*4rnqo ltx-zz,ikkq :3- )-nass misplaced on an inclined plane of angle θ . When released, the block does not move. It is determined that the normal force acting from the incline on the block has a magnitude of 62 N while the force of static friction acting on the block has a magnitude of 38 N. The coefficient of static friction between )l:ohyeq znkr+xy t --h3*z, n -ke4iqthe block and inclined plane is 0.92. Which one of the following choices best represents the mass,m, of the block?
A. 2.4 kg
B. 6.2 kg
C. 7.3 kg
D. 8.4 kg
E. 10.0 kg
参考答案: C
本题详细解析:
暂无
| 
