Question

A spring is compressed by a 5.60 kg mass. The mass begins from rest at a height (h1) of .980 m above the base of a frictionless inclined plane. The mass slides down the plane and comes to rest when it has compressed the spring a distance (x) of 8.00 cm. If the spring has an elastic constant of 1.46 x 10 to the power of 4 N/m, how far above the base of the plane (h2) is the mass when it comes to rest?