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Physics - NLM Question with Solution | TestHub

PhysicsNLMFrictionMedium2 minQB

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A block of mass 2 kg is thrown at 6 m/s on a stationary long plank of mass 4 kg with $μ = 0.5$ ; the plank rests on a frictionless surface. The time when the block comes to rest w.r.t. the plank is: (Take $g = 10$ m/s²)

Options:

Answer:

Solution:

Friction =
$0.5 \times 2 \times 10 = 10 N$ : block retards at $5$ m/s², plank accelerates at
$\frac{10}{4} = 2.5 m/ s^{2}$
$t = \frac{6}{7.5} = \frac{4}{5} s .$

Option A.

Subject:PhysicsTopic:NLMSubtopic:Friction

⏱ 2mℹ️ Source: QB

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