Concept:In simple harmonic motion of a loaded spring, the restoring force is supplied by the elasticity of the spring itself.
Explanation:A load attached to a spring, when displaced from its equilibrium position, experiences a force that tries to bring it back to that position.
The spring opposes the displacement by exerting a force in the opposite direction.
According to Hooke's law, this restoring force is
F=−kx, where
k is the spring constant and
x is the displacement from equilibrium.
This force is directly proportional to the displacement and is always directed toward the equilibrium position.
It arises from the internal elastic nature of the spring, not from adhesion, friction, or gravity.
Therefore, the force that restores the load is the elastic force of the spring.
Answer:B. elastic