1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution I'm having trouble visualizing what is going on in this problem. I imagine that the box is in a position like this with a spring on each end of the box. Then a force F is applied that compresses the springs. What I'm wondering is: How does the force parallel to the springs compresses both springs? It would seem that one would be compressed, while the other would not be effected.