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PhysicsNLMFrictionMedium2 minQB

PhysicsMediumsingle choice

A block is about to slide down an inclined plane when its inclination to the horizontal is $θ$ . If now a 5 kg weight is attached on the block:

Answer:

Solution:

The sliding condition

$tan θ = μ$

is independent of mass:

both the driving force $M g sin θ$ and the limiting friction $μ M g cos θ$ scale with the total mass, so the block remains on the verge of sliding.

Option A.

Stream:JEESubject:PhysicsTopic:NLMSubtopic:Friction

⏱ 2mℹ️ Source: QB

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