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PhysicsNLMChallenging application of NLMMedium2 minQB

PhysicsMediumsingle choice

In the balance machine shown in the figure, which arm will move downward after the system is released (assuming string and the pulley to be ideal)

Answer:

Solution:

Left side: $T_{1} - 2 m g = 2 m \cdot \frac{a}{1} with a = \frac{g}{5} \Rightarrow T_{1} = \frac{12 m g}{5}$

Right side: $T_{2} - m g = m \cdot \frac{3 g}{5} \Rightarrow T_{2} = \frac{8 m g}{5}$

Since $T_{1} > T_{2}$ , the left arm is pulled down harder, so the left arm moves downward. Answer: (A).

Stream:JEESubject:PhysicsTopic:NLMSubtopic:Challenging application of NLM

⏱ 2mℹ️ Source: QB

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