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Work: The work done by a force of one pound acting through a distance of 1 foot. The SI unit, the joule is preferred.
Torque: The torque exerted by a force of 1 pound acting through lever-arm of 1 foot.
Alternatively, in 14th century England, during the reign of King Edward II, the inch was defined as:
(Klein, p. 63). The inch was also defined as the combined length of 12 poppyseeds.
Today, one inch equals (by definition ) 2.54 centimeters.
12 inches = 1 foot.
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