Here is a very basic question that I need help with. 1. The problem statement, all variables and given/known data A spring has a spring constant (k) of 82 N/m. How far must the spring be compressed to store 35J of potential energy? 2. Relevant equations I think it is: E = 1/2 kx^2 3. The attempt at a solution I don't understand how to setup this problem. Please help me.