1. The problem statement, all variables and given/known data In the figure (Figure 1) each of the suspended blocks has weight w. The pulleys are frictionless and the ropes have negligible weight. 2. Relevant equations w = mg Forces cancel out, so Tension = weight (since they are suspended) 3. The attempt at a solution For a (pulley) ), I tried a free-body diagram with mg pointing down, and tension pointing up, with equal magnitude. This was marked wrong, but I don't see any other forces acting on the weight. For b (either weight) ), I did the same thing as I did in a, because, after all, isn't it just mg and tension that act on both weights? For c (either weight) ), same as a and b.