Two boxes of masses m and 3m are stacked. The surface between the more massive box and the horizontal surface is smooth and the surface between the boxes is rough. If the less massive box does not slide on the more massive box, what is the static friction force on the less massive box?

Question

Tamia Clements

Physics

1 July, 15:53

Two boxes of masses m and 3m are stacked. The surface between the more massive box and the horizontal surface is smooth and the surface between the boxes is rough. If the less massive box does not slide on the more massive box, what is the static friction force on the less massive box?

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Answers (1)

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Jefferson Campos · Answer 1

If the less massive box does not slide on the more massive box, the static friction force on the less massive box is (D) F/4.

F = ma

F = (3m+m) a

a = F/4m

Here are the following choices:

A) F

B) F/2

C) F/3

D) F/4