Question

Stan applies a force to stretch a spring, then allows the spring to recoil to half the length it was stretched. How much force is required to keep the spring at its new deformation?

A. The same force as initially applied
B. Twice the force initially applied
C. Four × the force initially applied
D. Half the force initially applied

Answer 1

The force required to keep the spring at its new deformation is twice the force initially applied.

Step-by-step explanation:

Force is an external agent capable of changing a body's state of rest or motion. It has a magnitude and a direction. The direction towards which the force is applied is known as the direction of the force, and the application of force is the point where force is applied. The force required to keep the spring at its new deformation is twice the force initially applied. When the spring is initially stretched, a certain amount of force is required to stretch it. When the spring recoils to half its length, it exerts a force in the opposite direction. To keep the spring at its new deformation, the force applied must be equal and opposite to the force exerted by the spring.

Since the spring recoils to half its length, the force required to keep it at its new deformation will be twice the force initially applied.