What are the tension forces in a suspended mass system?

[pbele21]

Homework Statement

the question is this,
in the figure, find t1,t2, t3, and t4; if Fgrav=80N

Homework Equations

The Attempt at a Solution

the instructor added 2 more stings and I'm really confused where to start on doing free body diagram. hope you guys can help me.. :(

 

[Doc Al]

Draw free body diagrams for where the ropes meet.

 

[pbele21]

thank you for the reply. i got it already. :) my real weakness is doing this free body diagram. thanks again.