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Q.

Three blocks A, B, and C are suspended as shown in the figure. Mass of each of blocks A and B is m. lf the system is in equilibrium, and mass of C is M, then 

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a

M>2m

b

M=2m

c

M<2m

d

None of these

answer is C.

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Detailed Solution

 At equation 2Tcos⁡θ=Mg,T=mg

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cos⁡θ=Mg2mg=M2m⇒ cos⁡θ<1M2m<1 ⇒ M<2m

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