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Q.

In the given arrangement, for the system to remain under equilibrium, the'θ' should be  

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a

0°

b

30°

c

45°

d

60°

answer is C.

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Detailed Solution

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T=Mg

2Tcosθ=2Mg

2(Mg)cosθ=2Mg

cosθ=22

cosθ=12

cosθ=cos45°

θ=45°

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