How can I approach this rotational equilibrium problem?

[Tony89]

Homework Statement

Here is the problem and a diagram:

http://www.city-wars.com/lastscan.jpg

Homework Equations

T= r*F

The Attempt at a Solution

I don't know where to begin. Where are the normal forces acting? I am just can't visualize this problem and it has me stumped.

 

[Astronuc]

A normal force acts normal (perpendicular) to the moment arm on which it acts. The moment arms extend from the pivot to the point of interaction.