Question

Initially spring is relaxed. A person starts pulling the spring by applying a variable force F. Work done by spring on wall is :

• A. Zero
• B. equal to the kinetic energy of the spring
• C. equal to the potential energy of the spring
• D. cannot be determined

Answer 1

The correct option is A Zero

Zero, as displacement is zero.

We know that $W=FS$

where $S$, is the Displacement.

Since, displacement is zero work is also zero.