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NEET 2010 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2010

A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on an inclined plane. Both roll down without slipping. Which one will reach the bottom first ?

Answer: (4)

Solution

For rolling without slipping, the acceleration down the incline is , where is the radius of gyration. Time to cover length : . A smaller means a smaller

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Question ID VK-090357