Questions
The bob A of a simple pendulum is released when the string makes an angle of with the vertical. It hits another bob B of the same material and same mass kept at rest on the table. If the collision is elastic
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Correct option is D
Due to the same mass of A and B as well as due to elastic collision velocities of spheres get interchanged after the collision.
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A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its energy and rebounds to the same height. The initial velocity of its projection is (in m/s) [Take g = 10 m/s2]
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