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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A sphere rolls on the surface with velocity . It encounters a smooth frictionless incline of height which it needs to climb. What will be the minimum velocity for which it will climb the incline?

Answer: (D)

Solution

On a frictionless incline there is no torque, so the spin kinetic energy stays constant and only the translational energy is converted to potential energy:

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Question ID VK-040624