Define Elasticity.

ANSWER : Elasticity is a fundamental concept in physics that describes the ability of a material to deform under the application of an external force and return to its original shape and size when the force is removed. In simpler terms, it refers to how "stretchy" or "flexible" a material is.

The most commonly used formula to express elasticity is Hooke's Law, given by:

F = k * ΔL

where:

- F represents the force applied to the material.

- k is the spring constant, also known as the stiffness constant. It measures how much force is needed to stretch or compress the material by a certain amount.

- ΔL represents the change in length of the material from its original state.

Hooke's Law states that the force applied to an elastic material is directly proportional to the change in length it undergoes. This relationship holds as long as the material remains within its elastic limit, which is the maximum amount of stress or force the material can withstand without undergoing permanent deformation.

Also Read : Define Critical Velocity.

Also Read : What is Current Density? Write its dimension.

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