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 mass misplaced on an inclined plane of an 7bbywl0h t putxhs8p5x)4 36tgl rfk, 8l/vkv r6e 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 wh /rlr vk8f ,vk6ile the force of static friction acting on the block has a magnitude of 38 N. The coefficient of static friction between the 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
| 
