1. The problem statement, all variables and given/known data A 1864 g mass is on a horizontal surface with mk = 0.380, and is in contact with a massless spring with a force constant of 631 N/m which is compressed. When the spring is released, it does 3.15 J of work on the mass while returning to its equilibrium position. Calculate the distance the spring was compressed. What is the velocity of the mass as it loses contact with the spring? 2. Relevant equations 3. The attempt at a solution None yet Would someone help me out with a starting point or some hints on this, thanks!