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Question

Physics Question on elastic moduli

The modulus of elasticity is dimensionally equivalent to

A

Stress

B

Surface tension

C

Strain

D

Coefficient of viscosity

Answer

Stress

Explanation

Solution

Hookes law establishes the relationship between stress and strain Stress: The force per unit area Strain: The elongation or contraction per unit length (dimensionless) The ratio of stress to strain is known as the elastic modulus of the material Hookes law establishes the relationship between stress and strain Stress: The force per unit area Strain: The elongation or contraction per unit length (dimensionless) The ratio of stress to strain is known as the elastic modulus of the material Elastic Modulus = stress  strain =\frac{\text { stress }}{\text { strain }} Hence, the modulus of elasticity is dimensionally equivalent to the stress Elastic Modulus = stress  strain =\frac{\text { stress }}{\text { strain }} Hence, the modulus of elasticity is dimensionally equivalent to the stress