JEE Main | 2014Rotational MotionHard

Question

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?
       

Options

A.
B.
C.
D.g

Solution

         
a = Rα
mg - T = ma
T × R = mR2α
or   T = ma
⇒   a =

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