# What is Simple Harmonic Motion in Physics

## Simple Harmonic Motion in Physics

To and fro motion of a body in which acceleration is directly proportional to displacement and always directed towards mean position is known as Simple Harmonic Motion.

Condition for Simple Harmonic Motion

The conditions for simple Harmonic Motion are given below:

Some resisting force must act upon the body.

Acceleration must be directly proportional to the displacement.

Acceleration should be directed towards mean position.

System should be elastic

Examples:

Following are the examples of S.H.M

– Body attached to a spring horizontally on an ideal smooth surface.

– Motion of a simple and compound pendulum.

– Motion of a swing.

– Motion of the projection of a body in a circle with uniform circular motion.

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