Force induced by mass (very simple

[Ortix]

Homework Statement

I'm supposed to draw a FBD with labeled forces of the footpedal and the actual kicking thingy (2 separate system)
http://img842.imageshack.us/img842/3812/capture2bf.png

Homework Equations

No equations really

The Attempt at a Solution

Well I got all of em right but for some reason I don't understand where the part after mg comes from. The whole L2/R1. I'm almost certain it's just a real simple explanation, I just had a brainfart :)
This is the solution:
http://img717.imageshack.us/img717/6926/capturefjf.png

 

[Simon Bridge]

Comes from the torque about the pivot of the wheel/hammer assembly above the pedal.