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## Homework Statement

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.

## Homework Equations

Summation of forces

## 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?