Question

1. A student says that he had applieda force F =-k\sqrt x on a particle and the particle moved in simple harmonic motion. He refuses to tell whether k is a constant or not.Assume that he has worked only with positive x and noother force acted on the particle. (a) As x increases k increases. (b) As x increases k decreases. (c) As x increases k remains constant. (d) The motion cannot be simple harmonic.

Answer 1