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Hooke’s Law and Modulus of Elasticity

According to this law, within the elastic limit, stress is proportional to strain (Fig. 10).
i.e., Stress ∝ Strain or 48543.png
where constant E is called modulus of elasticity.
Fig. 10
  • Its value depends upon the nature of material of the body and the manner in which the body is deformed.
  • Its value depends upon the temperature of the body.
  • Its value is independent of the dimensions (length, volume, etc.) of the body.
There are three moduli of elasticity, namely, Young’s modulus (Y), Bulk modulus (K), and modulus of rigidity (η) corresponding to the three types of the strain.

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