This is just a problem from my midterm, and I was wondering if I did it correctly 1. The problem statement, all variables and given/known data Weight of block B is 15kN, weight of block A is 25kN. Find force P that has to be applied to keep the system in equilibrium in tension in the cable 2. Relevant equations [tex]\sum[/tex]Fx=0 [tex]\sum[/tex]Fy=0 3. The attempt at a solution So first I figured I'd draw a FBD around block B (FBD1 on the image). I also decided I would use a different axis (x' and y'). From this I was able to write the equilibrium equations: [tex]\sum[/tex]Fx=3T-15*cos(60)=0, from which T=2.5kN (I also wrote the Fy equation, but I won't post it because it serves no real point) Next, I drew a FBD around block A (FBD2 on the image). I used a different axis once again. And I got: [tex]\sum[/tex]Fx=-25*cos(60)+P(cos30)+2.5kN=0, from which P=11.55kN Is that correct? It makes sense in my head, but then again that wouldn't be the first time my gut feeling is wrong.Thanks!