mass of e is 100 kg mass of bar is 20 kg and acts at midpoint sume of moments about point a due to weight of bar and forces on b by bc, bd, and be, are 0, determine tensions in bc and bd so i continued like this. The moment about point A from all those forces is 0. 0 = (Raf x Wab) + (Rab x Wbe) -(Rab x Tbc) - (Rab x Tbd) I can figure out the first two terms of this eq, but i have to find magnitude of the vectors of Tbc and Tbd. But i only have this equation and these two equations: Tbc= |Tbc|*Ebc where Ebc is a unit vector in BC direction Tbd= |Tbd|*Ebd where Ebd is a unit vector in the BD direction Did i set this up incorrectly or how do i proceed? a picture has been included. Thanks for your help Pt A is at the origin Pt D is (0,5,5) Pt C is (0,4,-3) Pt B is (4,3,1) Pt E is where the 100 kg weight is AB is the bar where 20 kg acts down the midpoint any help is APPRECIATED!