Curtis, Robert
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Simple Machines Practice
A nice site that describes the various simple machines and related calcs
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Gears, Pulleys, and Sprockets Calculations
A series of videos that describe the calculation process for gears, pulleys, and sprockets. - 
	
Gears, Pulleys, and Sprockets Explained
videos that describe the ideas behind gears, pulleys, and sprockets. - 
	
Simple Machines Calculations
Videos that describe the calculations for simple machines. - 
	
Simple Machines Explained
A playlist of various videos that describe simple machines in the context of our course. 
