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Q.

The pulley and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle 'θ' should be

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a

b

30°

c

45°

d

60°

answer is C.

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Detailed Solution

Draw FBD of m is T=mgDraw FBD of 2m is 2Tcos⁡θ=2mg
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The pulley and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle 'θ' should be