Question

Give one word for motion that repeats itself again and again after a fixed interval of time.

Answer 1

Periodic motion:

1. Motion that repeats itself again and again after a fixed interval of time is called periodic motion.
2. Motion of the planet around the sun and the motion Earth around the sun are examples of periodic motion.

Non-periodic motion:

1. A motion does not repeat itself at a regular interval of time is called non periodic motion.
2. A man walking through a park, motion of vehicle on the road, etc. are the examples of non periodic motion.

Hence, Motion that repeats itself again and again after a fixed interval of time is called periodic motion.