本题目来源于试卷: Typical Forces，类别为 美国物理杯赛(Physics Bowl)
[单选题]
01.12: If the block is ekko0xhhc 8+ga(fp)+ ,qb sv; placed on a s co q7xe:pd c0 w5.l(mlecond plane (where friction is significant) in inclined at the same angle, it will begin to accelerate at 2.0 m/s. What is the force of friction between the b p: cecd0.75mx (lwo lqlock and the second inclined plane?
A. 10N
B. 15N
C. 25N
D. 43.3N
E. 50N
参考答案: B
本题详细解析:
暂无
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