Hook’s law (or) Law of Elasticity was discovered in 1660 by the English scientist Robert Hook. Hook's law states that "when a material is loaded within elastic limit, the stress is proportional to the strain produced". This means that the ratio of the stress to the corresponding strain is constant within the elastic limit. This constant is called Modulus of Elasticity (or) Modulus of Rigidity (or) Elastic Modulii.
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| Hook’s law (or) Law of Elasticity |
Credits: Wkipedia