1. The problem statement, all variables and given/known data I'm having trouble with this structure, but I think I finally figured it out. I'm hoping to get a confirmation or a push in the right direction if I'm wrong. I'm trying to solve the truss in terms of the weight at the end. 2. Relevant equations Standard equilibrium 3. The attempt at a solution I sectioned the upper left portion cutting through the pivot members and 3 sections of cable (in blue) to try and solve for tension T in terms of W using the moment about the pivot point where the trusses are joined, but my solution went bad when I tried to apply that to the full structure in order to determine reactions at the supports. I think what happened was that I don't know how to apply the tension force to the full FBD. I applied the tension only to the point of contact with the ground, which resulted in the roller having a downward force (impossible). I now suspect that I need to apply the tension at every point and basically treat it like a bunch of external forces to the full truss (resulting in 4 total applications of T). Am I correct? I was also wondering if the tension force can be applied at the joints since a FBD of the pulleys gives a resultant at the joint equal to T in whatever directions the the cable runs. Or do I have to aplpy the forces at the radius of the pulleys?