The potential energy of a body is given by `U = A - Bx^(2)` (where x is the displacement). The magnitude of force acting on the partical is

Options

A. constant
B. Proportional to `x`
C. Proportional to `x^(2)`
D. Inversely proportional to `x`

Answer

B

Explanation

`U - A - Bx^(2) implies F = - (dU)/(dx) = 2 Bx implies F = x`