# What is Hooke’s Law? – Strength of Materials

**What is Hooke’s law?**It is the general question that is

asked in the subject strength of materials. This law gives us a relation between

stress and strain. It was given by Robert Hooke in 1660. It is defined on

elastic materials.

## What is Hooke’s Law

**Statement:**According to the Hooke’s law, when a material is

loaded within elastic limit, the stress induced in the material is directly

proportional to the strain produced. It means that the ratio of

stress with the corresponding strain gives us a constant within elastic limit.

The constant is known as Modulus of Elasticity or Modulus of Rigidity or

Elastic Modulii.

In the Stress strain curve the proportionality limit

indicates the Hooke’s law. The curve shows linearity within elastic limit. The ratio

of stress and corresponding strain in the stress strain curve gives us Young’s

Modulus

indicates the Hooke’s law. The curve shows linearity within elastic limit. The ratio

of stress and corresponding strain in the stress strain curve gives us Young’s

Modulus

Mathematically

###
Young’s Modulus or Modulus of Rigidity or

Elastic Modulii.

It is defined as the ratio of stress to

the strain within elastic limit. It is denoted by the letter ‘

the strain within elastic limit. It is denoted by the letter ‘

**E’.**- It represents the elastic property of a material
- The unit of Young’s modulus is N/m2

or N/mm2. The unit of young’s modulus is same as that of units of stress.

Where,

σ = Stress

e = Strain

E = Proportionality constant called as Young’s

Modulus

Modulus

This is all about

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**what is Hooke’s law**? If youfind anything missing or incorrect than comment us. And if you like this

article than don’t forget to like and share us on Facebook.

The limiting stress is called limit of proportionality