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Physics - NLM Question with Solution | TestHub

PhysicsNLMFrictionHard2 minPYQ_2013

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The upper half of an inclined plane of inclination $θ$ is perfectly smooth while lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom, if the coefficient of friction between the block and lower half of the plane is given byNEET 2013 (All India)

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Solution:

The block may be stationary, when $m g sin θ \cdot L = α m g cos θ \frac{L}{2}$ $α or α = \frac{m g sin θ \cdot L}{m g cos θ \frac{L}{2}} = 2 \frac{sin θ}{cos θ} = 2 tan θ = 2 tan θ$

Stream:NEETSubject:PhysicsTopic:NLMSubtopic:Friction

⏱ 2mℹ️ Source: PYQ_2013

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