1. The problem statement, all variables and given/known data Hi, I am confused by this physics question and I was wondering if someone could help me out. I have a system with 2 pulleys and 3 weights. They are all held together by one string, the two weights on the outside of the two pulleys, both weighing the same, hold up the weight in the center. The system has a central object B with mass (M) which is suspended half way between two pulleys by a string. The whole system is in equilibrium. The objects A and C, which are on the outside of the pulleys, have the same mass of (m). What I'm trying to figure out, what is an equation for the vertical displacement of the central object B in terms of the horizontal distance between the two pulleys (L), the mass of object B (M), and the mass (m) of objects A and C?