Question

Review: 2D Forces

The beam has a weight of 700 lbs. Determine the shortest cable ABC that can be used to lift it if the maximum force the cable use is 1500 lb.

Answer 1

If I call with \(L\) the length of the rod, and with \(l\) the length of the cable, then I can write:
\[l = \frac{L}{{\tan \theta }}\]

Answer 2

okay

Answer 3

Now, there are three forces acting on our rod:
1) forces F1 and F2
2) weight force at midpoint of the rod