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JEE Main 2011 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main 2011

A mass m hangs with the help of a string wrapped around a pulley on a frictionless bearing. The pulley has mass m and radius R. Assuming pulley to be a perfect uniform circular disc, the acceleration of the mass m, if the string does not slip on the pulley, is

Answer: (2)

Solution

and . So , option (2).

Question ID VK-039294