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Question

Which of the following is/are not periodic motion?
  1. The motion of the bob of the simple pendulum
  2. Motion of a bouncing ball under the action of gravity and friction
  3. Both A and B
  4. Motion of a planet around the sun

A
The motion of the bob of the simple pendulum
B
Both A and B
C
Motion of a planet around the sun
D
Motion of a bouncing ball under the action of gravity and friction
Solution
Verified by Toppr

A periodic motion is the one which repeats itself at fixed intervals of time.
A bouncing ball doesn't bounce to the same height everytime. Hence we can't say that the motion is repeating.

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