what is the difference between circular motion and periodic motion?? Pls give two examples with it.

Your friends have given the examples here I give the differences only.

Differences between circular and periodic motion.


Circular motion

Periodic motion


All circular motions are periodic

All periodic motion are not circular


The distance from the centre is constant  

The distance from centre may vary with time.


The radial acceleration is always present and is directed towards the centre

May not be always directed towars the centre. In general radial acceleration may be absent.

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