Question

Define Young's modulus of Elasticity​

Answer 1

Modulus of elasticity or coefficient of elasticity of a body is defined as the ratio of the stress to the corresponding strain produced in the body, within the elastic limit.

For a given material there can be different types of modulus of elasticity depending upon the stress applied and the resulting strain produced.

1. Young Modulus of elasticity (Y): It is defined as the ratio of normal stress to the longitudinal strain within the elastic limit.

2. Bulk Modulus of elasticity (B) : It is defined as the ratio of normal stress to the volumetric strain, within the elastic limit.

3. Modulus of Rigidity or Shear modulus of elasticity (G) : It is defined as the ratio of tangential stress to the shearing strain, within the elastic limit.

Hope it's Helps u........

Answer 2

$\huge\underline\green{\sf Young's\: Modulus :-}$

Its Symbol is 'Y'

Within elastic limit in ratio of longitudinal stress and longitudinal strain is called Young's Modulus of Elasticity.

$\large{\boxed{\sf Y ={\frac{Longitudinal\:Stress}{Longitudinal\:Strain}}}}$

$\large{\boxed{\sf Y = {\frac{FL}{lA}}}}$

Unit :- $\sf{N/{m}^{2}}$