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NEET 1993 (AIPMT) · Friction on an Incline

Friction on an Incline question from NEET 1993 (AIPMT)

Q32NEET 1993 · AIPMTEasy

Friction on an Incline

A block has been placed on a inclined plane with the slope angle $\theta$ , block slides down the plane at constant speed. The coefficient of kinetic friction is equal to

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Answer: (d)

Constant speed means net force is zero along the incline.
$mg\sin\theta = \mu_k mg\cos\theta$
So the answer is (d) $\mu_k = \tan\theta$ .

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