Alright i worked it out, the tricky bit has to do with the pulley.
The total force of the pullet in the X plane is T + TcosA
The force in the normal direction (which affects friction) is mgcosA - TsinA
Gl
I'm also having trouble with this.
"is 31º the angle between the upper rope and the slope, and is the lower rope suppposed to be parallel to the slope?"
That's what i want to find out as well hmm