The problem is hard to describe, but ill give it a shot: there is a 50cm long spring ( k = 500 N/m) hanging from the ceiling and a 10cm cord connecting it to another identical spring, which supports a 100N box. In addition, there are two (limp) 85cm cords. One is hanging vertically from the celing and is connected to the lower spring. The other one is hanging from the top spring and is connected to the 100 N box. If the 10cm cord in the middle is cut, I need to find out if the box moves up or down, how far the box moves, and the total work the spring forces do during the move. Supposedly, the answers to the first two are up and 5cm. However, I am clueless as to how to begin this problem. Even when I draw all the forces in, nothing seems to make sense. I know it's a difficult problem, but I dont even know how to tell that the box is moving up.