Q. The potential energy of a system is represented in the first figure. The force acting on the system will be represented by
A)
B)
C)
D)
Explanation
(c) As slope of problem graph is positive and constant upto certain distance and then it becomes zero
So from $F = \frac{- dU}{dx}$, up to distance $a$,
$F =$ constant (negative) and becomes zero suddenly
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.