Force induced by mass (very simple

AI Thread Summary
The discussion focuses on drawing a free body diagram (FBD) for a foot pedal and a kicking mechanism as separate systems. The user successfully identified the forces involved but is confused about the term "L2/R1" that appears after "mg" in the solution. The explanation provided clarifies that this term relates to the torque about the pivot of the wheel/hammer assembly above the pedal. The user acknowledges the simplicity of the concept but admits to a moment of confusion. Overall, the thread emphasizes understanding the relationship between forces and torque in mechanical systems.
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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
 
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Comes from the torque about the pivot of the wheel/hammer assembly above the pedal.
 

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