How Do You Calculate Support Forces for a Diving Board?

[Ashford]

Homework Statement

Find the forces (Fa and Fb) need to support the diving board drawn below. Inlcude directions for each force.
http://img171.imageshack.us/img171/4923/physicsisgayea1.th.jpg

Homework Equations

Don't know

The Attempt at a Solution

Was absent when we went over this type of problem and have no idea on how to solve it.

 

[PaintballerCA]

The equation of motion is F=ma. What is a defined as? What do you know about this system?