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The bouncing of a ping pong ball is

a) Harmonic motion b) Periodic motion c) Linear motion d) Circular motion

1 Answer

It is not a linear motion as it goes up and down.
It is not circular .
It is not SHM as restarting force applied being due to gravity is not proportional to negative of displacement which is a requirement for SHM.
It is periodic (neglecting air drag, losses upon bouncing) as the ball reaches the top periodically.
Hence periodic motion is the correct answer.
answered Dec 10, 2013 by meena.p

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