Question

What are deforming force and restoring force?

Answer 1

Deforming force:

Whenever a force is applied to a material body, the same usual location of its molecules changes. Whether this results in such a modification or alteration in the length, volume, or body shape, the force delivered is generally referred to as deforming force.

Example: A bent pencil, mild steel rods, etc.

Restoring force:

Whenever deformation forces were indeed reduced, the force that restores the dimensions, as well as the shape of the body, is usually referred to as restoring force.

Example: The motion of a spring.