Wedge | inclined plane, inclined surfaces & force | Britannica
https://www.britannica.com/technology/wedge
webwedge, in mechanics, device that tapers to a thin edge, usually made of metal or wood, and used for splitting, lifting, or tightening, as to secure a hammer head onto its handle. Along with the lever, wheel and axle, pulley, and screw, the wedge is considered one of the five simple machines.
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