# #

The displacement of a mass from its equilibrium position as it oscillates on a horizontal spring satisfies the equation $$x(t)= Acos(\omega t + \phi_0)$$.

If $$\phi_0$$ = $$\frac{2\pi}{3}$$, at what times between 0 and T are the kinetic and potential energies equal?

## Part 1#

Enter the larger time value here.

Please enter a numeric value.

## Part 2#

Enter the smaller time value here.