What is oscillatory motion?

The to and fro motion of a body about a fixed point is called oscillatory motion. If there are no resistance forces, the body continues its movement forever.

There are two types of oscillations: linear oscillation and circular oscillation.

Examples of linear oscillation 1) Oscillation of a floating cylinder. 2) Oscillation of strings of musical instruments.

Examples of circular oscillation 1) Movement of the earth around the sun. 2) Oscillation of simple pendulum