Solve Intermediate Materials Statics Problem: Deflection, Internal Forces

[billybob70]

This is a problem for an intermediate materials class. There is a RIGID beam (does not bend) that is pinned at the top and has a 220 lb force on the bottom. There are two cables holding it in place (See diagram below).

we are supposed to find the deflection of the beam at the bottom, and the internal forces in the wires.

This problem looks to me like it is statically indeterminate. I cannot figure out which point i should sum the moments at--there are always too many unknowns.

 

[billybob70]

i think i figured it out, so you can remove this thread if you want