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Question

The surface between A & B is rough & μk=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
fk=μkN=0.4×50=20


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

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