1. The problem statement, all variables and given/known data [Ans: FA = -206i + 188j lb, T = 131 lb] 2. Relevant equations Since it's assumed that the system is in equilibrium, so I assume that ΣF=0 and ΣM=0 3. The attempt at a solution I tried to draw a free-body diagram for the system, and set up three equations below: (I don't know the direction of FA yet, so I assume that both components are in positive direction) ΣFx = FAx + Tcos45° + Tcos30° = 0 ΣFy = FAy - 150 - W + Tsin45° + Tsin30° = 0 ΣMz [Moment centered at A] = (16)(-150 - W) + (40)(Tsin30° + Tsin45°) + (6)(Tcos30° + Tcos45°) = 0 When I solved the third equation to find tension T, it didn't give me the right answer, I am not sure which part I did wrong, maybe I missed some forces on the free-body diagram, so I made a wrong equation of ΣMz? Any hints or approaches are much appreciated.