# Thread: Forces in a bridge-truss.

1. ## Forces in a bridge-truss.

I am hoping that I posted this in the correct section, if not can a mod/admin move it to the correct location.

I am having trouble with this question and looking through my textbook there seems to be many very similar to it so I am hoping if someone can answer this one for me and show me how they got it, I can use that to figure the rest myself.

Q: In the bridge-truss joint shown below, the forces acting on the members form a concurrent force system. Knowing that the joint is in equilibrium, determine the forces C and T.(Assume that the bottom of the truss is at a straight 180 degrees)

2. Originally Posted by EastEnder905
I am hoping that I posted this in the correct section, if not can a mod/admin move it to the correct location.

I am having trouble with this question and looking through my textbook there seems to be many very similar to it so I am hoping if someone can answer this one for me and show me how they got it, I can use that to figure the rest myself.

Q: In the bridge-truss joint shown below, the forces acting on the members form a concurrent force system. Knowing that the joint is in equilibrium, determine the forces C and T.(Assume that the bottom of the truss is at a straight 180 degrees)
You resolve the forces along x and y and set the sum of forces in each direction to zero. This will give you a pair of simultaneous equations in the two unknown forces which you can then solve.

CB

3. ## Re: Forces in a bridge-truss.

Originally Posted by CaptainBlack
You resolve the forces along x and y and set the sum of forces in each direction to zero. This will give you a pair of simultaneous equations in the two unknown forces which you can then solve.

CB
I agree on this. Can't have something to write for you provide it all.

_____________
walking bridges

4. ## Re: Forces in a bridge-truss.

Credits for that CaptainBlack, I'm really slow in math but I'll try solving EastEnder905's problem by the help of your idea.

5. ## Re: Forces in a bridge-truss.

Which truss? no picture attached!

6. ## Re: Forces in a bridge-truss.

Give it a try. You can make it if you are eager and motivated.