Question

All periodic motion are not oscillatory motion but all oscillatory are periodic why?

Answer 1

Answer:

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Explanation:

In oscillatory motion the object always repeats its motion at equal interval of time. Therefore, all periodic motions are not oscillatory motion but all oscillatory motion are periodic.

Answer 2

Answer:

All oscillatory motion are periodic because each oscillatory get completed in a definite interval of time ... ex - revolution of planets around the sun is a periodic motion but not an oscillatory motion ( ie not to and fro )