# Explain Hooke's Law.

## Question:

Explain Hooke's Law.

## Restoring Force:

Spring is a helically shaped elastic object. An elastic object is one that is capable of restoring its shape when deformed by external forces. Spring also tends to restore its original length, when it is compressed or stretched. The force generated by the spring during the state of compression/extension, that tends to restore its original shape, is called the restoring force.

The restoring force always opposes the external deforming force. It always points in a direction opposite to the change in the length of the spring.

The restoring force exerted by a spring varies in magnitude as the extension/compression in the spring is varied. The law that describes the relationship between them is known as Hooke's law.

According to Hooke's Law, the magnitude of the restoring force developed by a spring when it is stretched/compressed by a length, {eq}\Delta x {/eq}, is given by the equation:

{eq}F=K\Delta x {/eq}

Where, {eq}K {/eq} is the spring constant or force constant of the spring. Hooke's Law & the Spring Constant: Definition & Equation

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Chapter 4 / Lesson 19
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After watching this video, you will be able to explain what Hooke's Law is and use the equation for Hooke's Law to solve problems. A short quiz will follow.