Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.

A beam is 5,4 m long and it's mass is 1340 kg. The beam is hanging by a wire witch is attached to the beam's ends and the roof (the wire and the beam forms a triangel). The wire can hold a force (S) of maximum 16 kN. What is the minimum length of the wire?

So far:
The key here is to find the minimum angle between the beam and the wire, then we can use trigonometry to calculate the length of the wire.

As longer the wire gets, as larger the angle between the wire and the beam, as smaller force (S) on the wire.

S_{y}=G
S^{2}= \sqrt{S_{x}^{2}+S_{y}^{2}}