Chapter $6$:

Problem $1$:

This steel truss bridge is in the Gallatin National Forest south of Bozeman, Montana. Suppose that one of the tandem trusses supporting the bridge is loaded as shown. Determine the axial forces in members $\backslash ($ A B$,$ A C $\backslash ),$ and $\backslash ($ B C $\backslash ).(10$ points$)$