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Q.

A mass m is supported by a massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall on release?

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a

2g3

b

g2

c

g

d

5g6

answer is A.

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Detailed Solution

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For block T=mg-ma

For hollow cylinder Iα=T×R
here a=Rα

mR22×aR=(mg-ma)R⇒a=2g3

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