1. The problem statement, all variables and given/known data Hey guys, my problem is not really the end solution, but the preliminary step that I'm not too sure about. Given the following diagram: The image on the left is the given model, and the right image is my nodal element FBD, but somehow i dont believe that's correct. Can you guys help me out with this? 3. The attempt at a solution The question asks to derive the spring constants for the model, but to do that i need to get the diagram above correct. Any help you guys can provide is appreciated. Thanks!