Question

Question from my vector statics class (deals with vectors from physics)

see attachment.
I have broken down the forces into their x and y components. However, I cannot use Fx=0 and Fy=0 since I have more than 2 unknowns. It seems that I need to realize something that will cancel one of the two forces. Ples help

must explain answer

Answer 1

free body diagram at pulley C:

along AC at 55deg, 2*T (for tension) is pulling up

along CB at 25deg, T is pulling up

combining, 2T*sin55 + T*sin25 = 1800

solving, T= 873.4N

Ooops...me bad - mis-read the Q. plz report n delete this!

Answer 2

Haven't done one like this in awhile but I see no one is answering so I gave it a try.  I think it's right but let me know if you see something fishy...