Question

please tell the definition of periodic motion

Answer 1

Explanation:

Any motion of a system that is continuously and identically repeated. The time T that it takes to complete one cycle of an oscillation or wave motion is called the period, which is the reciprocal of the frequency. See pendulum; simple harmonic motion. From: periodic motion in A Dictionary of Physics

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Answer 2

Answer:

Motion of a body which is repeated at equal interval of time. The fixed interval of time after which the motion is repeated is called the period of motion.

Example: The motion of the hands of a clock.