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Net Contact Force

The surface b...

Question

The surface between A & B is rough & $μ_{k} = 0.4$ , find frictional force on A.

A

20 N, right

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B

20 N, left

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C

60 N, right

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D

60 N, left

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Solution

The correct option is A 20 N, right
$f_{k} = μ_{k} N = 0.4 \times 50 = 20$

w.r.t B, A is going back hence friction acts forward.

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