A spring with spring constant k = 15-N/m and length L = 24. Both masses are pulled x = 6.

A spring with spring constant k = 15-N/m and length L = 24.2-cm has masses m = 15-g attached at each end of the spring, and is placed on a frictionless table. Both masses are pulled x = 6.1-cm from equilibrium and released.

What is the period of oscillation of the individual masses?

What is the maximum potential energy stored in the spring?