일반물리학 1 — Equilibrium and Elasticity: Problem 22

22 In Fig. 12-29, a horizontal scaffold, of length 2.00 m and uniform mass 60.0 kg, is suspended from a building by two cables. The scaffold has dozens of paint cans stacked on it at various points. The total mass of the paint cans is 70.0 kg. The tension in the cable at the right is 722 N. How far horizontally from that cable is the center of mass of the system of paint cans?