Here's the situation proposed in a problem. I have a balance bar that is a meter stick. It has a fulcrum at 50cms. Mass A(100gms[.98nt]) is at 12.3cms and mass B(1.02nt) is located at 86.1cms. Mass B has been removed and the fulcrum C shifts fo the left by 14cms. I need to determine the mass of the meter stick. How do i do this?