Physics

Problem

For a particle moving along the

x

-axis, the potential energy is

V(x)=5x^{2}\,\text{J}

(where

x

is in metres). What is the magnitude of the force acting on the particle when it is at

x=2\,\text{m}

? a)

40\,\text{N}

20\,\text{N}

4\,\text{N}

10\,\text{N}