JEE Advanced 2018 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Advanced 2018

A ring and a disc are initially at rest, side by side, at the top of an inclined plane which makes an angle 60° with the horizontal. They start to roll without slipping at the same instant of time along the shortest path. If the time difference between their reaching the ground is , then the height of the top of the inclined plane, in *metres*, is . Take .

Answer: 0.75

Solution

For rolling: . Ring: ; disc: m/s. Length of incline .

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Question ID VK-026708