Question

A particle is placed at the origin and a force F = kx is acting on it (where k is a positive constant). If U (0) = 0, the graph of U (x) versus x will be: (where U is the potential energy function)

• A.
• A. (b)
• A.
• A.

Answer 1

Answer: (A), (A), (A), (A)

Answer 2

From F = –

= –= –dx

\ U (x) = –$\frac { \mathrm { kx } ^ { 2 } } { 2 }$

as U (0) = 0