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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A thin metal disc of radius 0.25 m and mass 2 kg starts from rest and rolls down an inclined plane. If its rotational kinetic energy is 4 J at the foot of the inclined plane, then the linear velocity at the same point, in ms⁻¹, is

Answer: (B)

Solution

For a disc, (since $/=1/3 ⇒

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Question ID VK-158572