Question

The potential energy of a body is given by $A-B{x}^2$ (where x is the displacement). The magnitude of force acting on the particle is

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

$F=\frac{-dU}{dx}=-\frac{d}{dx}(A-B{x}^2)=2Bx\therefore F\infty x.$