Apotential energy function is given by u(x)=(3.00j)x+(1.00j/m2)x3. what is the force function f(x) (in newtons) that is associated with this potential energy function?

Explanation:

The force is defined as the negative of the derivative of the potential energy:

If we use the potential energy function given in this problem:

and we calculate the force, we get:

So, the force is