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Physics - NLM Question with Solution | TestHub

PhysicsNLMFrictionMedium2 minPYQ_2018

PhysicsMediumsingle choice

Two masses $m_{1} = 5 kg$ and $m_{2} = 10 kg$ , connected by an inextensible string over a frictionless pulley, are moving as shown in the figure. The coefficient of friction of horizontal surface is $0.15$ . The minimum weight m that should be put on top of $m_{2}$ to stop the motion is:

Options:

Answer:

Solution:

$T = 5 g$ $\Rightarrow μ (10 + m) \geq 5 g$ $\Rightarrow 10 + m \geq \frac{5}{0.15}$
$\Rightarrow m \geq 23.33 k g$ $\Rightarrow m = 27.3 kg$ .

Stream:JEESubject:PhysicsTopic:NLMSubtopic:Friction

⏱ 2mℹ️ Source: PYQ_2018

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