Question

Define young's modulus of elasticity give its units and its dimensions

Answer 1

YOUNGS MODULUS OF ELASTICITY:

Within elastic limit , the ratio of longitudinal stress to the longitudinal strain is called YOUNGS MODULUS OF ELASTICITY of a material.

FORMULA:

$\gamma = \frac{longitudinal \: stress}{longitudinal \: strain} \\ = > \gamma = \frac{ \frac{force}{area} }{ \frac{change \: in \: length \: }{original \: length} } \\ = > \gamma = \frac{force}{\pi {r}^{2} } \times \frac{original \: \: length }{change \: in \: length}$

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Answer 2

Answer:

Dimensional formula:- ML^-1T^-2

Explanation:

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