Solve Atwood System Equilibrium: Find Tension in lbs

[wmrunner24]

Homework Statement

The system is in equilibrium and all pulleys
are massless and frictionless.

Find the tension T. The acceleration of
gravity is 32 ft/s2. Note : lb = slug · ft/s2.

Answer in units of lb.

Homework Equations

F=ma=0

The Attempt at a Solution

So, I'm totally lost an really in need of a good point in the right direction. How do I even begin to figure this out? I only have two numbers. The net force on this object must be equal to 0 as well. But, how do I derive an equation? Any help is greatly appreciated.

 

[ehild]

Write on the free body diagrams for the 93 slug body and for both moving pulleys. You have three ropes, with three different tensions. The pulleys are massless so the forces acting at each pulley must cancel.

ehild