Pounds-force

Though pounds-force had been used in low-precision measurements since the 18th century, they were never well-defined units until the 20th century. It was in 1901 when the CGPM first adopted a ''standard acceleration of gravity'' for the purpose of defining grams-force and Kilograms-force , a value often borrowed to define pounds-force, though other values such as 32.16 ft/s&² (9.80237 m/s&²) have been used as well. If the metric value of exactly 9.80665 M / S &², or approximately 32.174 05 ft/s&², is used this gives a force of exactly 4.4482216152605 Newton s for one pound-force.

SEE ALSO

Pound (weight) for a more complete discussion of customary units of force and mass.

Pound-force Per Square Inch for a unit of Pressure

Foot-pound Force , a unit of work, energy, or torque

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Pounds-force