# Hooke’s Law

#### description

Hooke's Law and Young's Modulus and Poisson's Ratio

#### notes

Hooke’s law:

Robert Hook found that within the elastic limit, the stress is directly proportional to strain. Thus we have

Stresspropstrain

or

Stress = K.strain

where k is the constant of proportionality called 'Elastic Modulus' of the material.

According to Hooke’s law, if strain increases the stress will increase and vice-versa.

• Hooke’s law is applicable to all elastic substances.

• It does not apply to plastic deformation.

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Hooke's Law, Poisson's Ratio [00:05:47]
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