1. The problem statement, all variables and given/known data Refer to link for picture of problem. http://session.masteringengineering.com/problemAsset/1127894/8/Prob.5-29.jpg Determine the magnitude of force at pin A as a function of position d. The mass of the weight is 700 kg and d goes from 1.7 m to 3.5 m I have found Fbc (Force on member b c) from an earlier problem to be 6.86d/1.2 and it is correct. I can't seem to get Fa (Force on pin a) though. 2. Relevant equations Summation of forces 3. The attempt at a solution I tried to sum the forces in the x direction and y direction and got the equations. ƩFx=0: Ax - cos(53.13)Fbd = 0 ƩFy=0: Ay - sin(53.13)Fbd = 0 I then found Ax and Ay then squared them added them together and took the square root. I got 5.716d. That is not the correct answer. Where did I go wrong?