(Solved): Problem 3: An antenna tower is held vertical by three guy-wires. The guy-wires will break if the l ...

Problem 3: An antenna tower is held vertical by three guy-wires. The guy-wires will break if the load on any of them exceeds $$2000\mathrm{lbs}$$. Assume the base of the tower is pinned in place in 3D. The tower is positioned by tightening the turnbuckle in cable AD. (a) Write all applicable assumptions in full sentence format. (b) Determine the forces in cables $$AB$$ and $$AC$$ when the cable $$AD$$ is being fully tightened. (c) Solve for the support reactions at the base of the tower $$E$$.