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Question

A uniform solid cylinder of mass M and radius R rotates on a horizontal. friction less axle. Two masses hung from light cords wrapped around the cylinder. If the system is released from rest, the tension m each cord is-
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A
Mmg(M+m)
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B
Mmg(M+2m)
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C
Mmg(M+3m)
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D
Mmg(M+4m)
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Solution

The correct option is D Mmg(M+4m)

mgT=ma

2TR=I

T=MR4

a=R

mg=ma+ma4

T=M44mg4m+M

T=MmgM+4m


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