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Lever
Levers can be used to exert a large force over a small distance at one end by exerting only a small force (effort) over a greater distance at the othe
Levers can be used to exert a large force over a small distance at one end by exerting only a small force (effort) over a greater distance at the other.
Archimedes lever, Engraving from Mechanics Magazine, published in London in 1824
Archimedes lever, Engraving from Mechanics Magazine, published in London in 1824
Simple lever, fulcrum, and vertical posts
Simple lever, fulcrum, and vertical posts
The middle ear matches mechanical impedance, like a lever.
The middle ear matches mechanical impedance, like a lever.
1871 Descent F937.1 fig 03
1871 Descent F937.1 fig 03