~~potential energy of a spring! 1. The problem statement, all variables and given/known data A spring with a 0.500kg mass is pulled 0.25m from the equilibrium position. Calculate the potential energy of the spring at 0.25m, if the spring constant is 6.8N/m. 2. Relevant equations Ep=mgh Ep=kx^2/2 3. The attempt at a solution Don't know where to start, sorry!