posted by Kayla .
Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a distance of 12cm (0.12m) from its equilibrium (un-stretched) position prior to release. Ignoring friction, what are the values of the potential energy, kinetic energy, and velocity of the mass, when the mass is 6cm from the equilibrium position?