Hi, May someone please help me with this problem because there seems to be something that I am missing. I know that I am suppose to get the sum of all the external forces, and then set them to zero. Well, after my calculations, I am still wrong. The question is: A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is horizontal. The tension in the rope is T = 637 N.