本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理
[单选题]
Two boxes of masses m and 3m are stacked. (See ,wmg3(mh p.sx mst+ f,Fi *2azaj:r wx yt7c+m( ks2wgi ;g. 4-6.) The surface between the more massive box and the horizontal surface is smooth and the surface between the boxes is rough. If th +wa;s: ri 7 gt2zwmj(2xa*kcye less massive box does not slide on the more massive box, what is the coefficient of static friction between the boxes? 
A. F/(4mg)
B. F/(3mg)
C. F/(2mg)
D. F/(mg)
参考答案: B
本题详细解析:
暂无
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