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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A thin hollow cylinder open at both ends: (i) sliding without rolling, (ii) rolling without slipping, with the same speed. The ratio of kinetic energy in the two cases is

Answer: (C)

Solution

Sliding only: . Rolling hollow cylinder (): KE_2=\tfrac12mv^2+\tfrac12mv^2=mv^2. Ratio .

Question ID VK-159071