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A unit of work equal to the work done by a force of one poundal acting through a distance of one foot in the direction of the force.
(Units) a unit of work or energy equal to the work done when a force of one poundal moves through a distance of one foot: it is equal to 0.042 14 joule
a unit of energy equal to the energy expended by a one-pound weight accelerating at one foot per second as it moves a distance of one foot. Abbr.: ft-pdl