(forces) Find the force problem

[Brittany W]

Homework Statement

http://imgur.com/a/Bz6PR

Homework Equations

The Attempt at a Solution

I included my attempt in the picture

 

[TSny]

In part b, the tension is the unknown force. The tension is no longer 11000 N.

 

[Brittany W]

In part b, the tension is the unknown force. The tension is no longer 11000 N.

so then T=384Sin(7)? I tried doing this to a similar problem with different numbers since I had the answer on hand, but my answer was still WAY off.

 

[TSny]

so then T=384Sin(7)?

Can you explain how you got this equation?