Paragraph for Questions 3 and 4: A 3 kg block is placed on a 4 kg block which is placed on a rough floor as shown in figure. (Between the blocks μ = 0.4, between the lower block and floor μ = 0.1, F = 28 N on the 4 kg block.)
Find magnitude of friction force (in N) acting on 3 kg block.

Question

Paragraph for Questions 3 and 4: A 3 kg block is placed on a 4 kg block which is placed on a rough floor as shown in figure. (Between the blocks μ = 0.4, between the lower block and floor μ = 0.1, F = 28 N on the 4 kg block.)

Find magnitude of friction force (in N) acting on 3 kg block.

TestHub · Accepted Answer

From the previous analysis, the blocks move together with a = 3 m/s². The only horizontal force on the 3 kg block is friction from the 4 kg block: f = ma = 3 × 3 = 9 N Answer: 9.00

Physics - NLM Question with Solution | TestHub

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