(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Hi so I have the following truss:

http://screencast.com/t/BIdagRt5abg

and I need to calculate the forces in every member by method of joints

3. The attempt at a solution

So I got the Reaction forces:

F(BG) = 25N and F(AC) = 35N

Now I'm not exactually sure what to do next, I know you calculate the x and y forces at each joint, I started at C

and then I got F(y) = 0 =35N + F(CJ) sin(45)

F(CJ) = -49.497

Im fairly sure that that is right

but when I get to the horizontal my equation is like this 0=F(CJ) * Cos(45)

which doesnt seem right since it means F(CJ) is zero

can someone please help me along thx.

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# Homework Help: Analysis Of Truss, Method Of Joints.

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