A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision :

Engineering

Physics

Collision

Rolling

Question

A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision :

friction between the ring and the ground is to the left.

there is no friction between the ring and the ground.

the ring comes to a complete stop.

the ring has pure rotation about its stationary CM

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As no data is given about nature of horizontal plane.

* The most appropriate answer to this question is (A,C), but because of ambiguity in language, IIT has declared [(A, C), (A)] as correct answer