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SAILHOPE HARDWARE TOOLS 15yr.
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When you are using leverage, and labor, power arm longer than the resistance arm levers should be used; if you want distance you should use dynamic resistance than short lever arm in arm. So the lever can be used easily, would save it away. However, to be labor-saving, it must be moved; moving to less distance, there must be some more power. To be labor-saving and less distance traveled, is impossible. It is from these axioms, and the "Centre of gravity" theory, based on Archimedes discovered the principles of leverage, that is, "two weight balance, is inversely proportional to their distance from the pivot and the weight.
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