# Elastic potential energy

## What is Elastic potential energy?

Stretching or squashing an object can transfer energy into its elastic potential energy store. Elastic energy is the mechanical potential energy stored in the material. Elastic energy occurs when objects are compressed, stretched or deformed.

## Elastic potential energy equation

To calculate Elastic potential energy we write the equation like this.

$E_e = { 1 \over2} ke {^2}$

## Elastic potential energy demo

In this tutorial you will learn how to calculate the energy stored in a stretched spring.

## Chilled practice question

A spring is stretched 580 cm. The spring has a spring constant of 30 N/M. Calculate the stored elastic potential energy of the stretched spring.

## Frozen practice question

Calculate the extension of a spring if it has a stored E.P.E of 2160 J and a spring constant of 15 N/M

## Science in context

Stretching or squashing an object can transfer energy into its elastic potential energy store

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