pound force


pound force
(lbf or lb)
   a traditional unit of force. Traditional measuring systems did not distinguish between force and mass units. A force of one pound is simply the gravitational force experienced at the Earth's surface by a mass of one pound. To compute this force, we multiply the mass by the acceleration of gravity, following Newton's law F = ma. Since one pound of mass is 0.453 592 kilograms and the acceleration of gravity averages 9.806 65 meters per second per second at the surface of the Earth, one pound force equals the product of these two numbers, 4.448 221 615 newtons. The symbol lbf should be used for the pound force to distinguish it from the pound of mass.

Dictionary of units of measurement. 2015.

Look at other dictionaries:

  • pound force — noun 1. The gravitational force of 1lb weight and mass 2. A unit of such force (abbrev lbf) • • • Main Entry: ↑pound * * * pound force, = poundal. (Cf. ↑poundal) Abbr: lbf (no periods) …   Useful english dictionary

  • Pound-Force —   [ paʊndfɔːs], Einheitenzeichen lbf, Einheit der Kraft in Großbritannien, definiert als die Kraft, die einem Körper mit der Masse 1 Pound (lb) die Normalfallbeschleunigung erteilt, 1 lbf = 4,4482216 Newton …   Universal-Lexikon

  • Pound (force) — Klbf redirects here. For the airport in North Platte, Nebraska, assigned the ICAO code KLBF, see North Platte Regional Airport. For the unit of mass, see Pound (mass). For basis weight of paper, see Paper density. The pound force (symbol: lb, lbf …   Wikipedia

  • Pound-force — This article deals with the unit of force. For the unit of mass see Pound (mass). The pound force or simply pound (abbreviations: lb, lbf, or lbf) is a unit of force. Definitions The pound force is approximately equal to the gravitational force… …   Wikipedia

  • Pound-force — Einheit Norm Angloamerikanisches Maßsystem Einheitenname Pound force Einheitenzeichen lb, lbf, lbf Dimensionsname Kraft Dimensionssymbol F In …   Deutsch Wikipedia

  • pound force — Force applied to a 1 lb. mass; has an acceleration of 32.173 ft/s2 …   Dictionary of automotive terms

  • pound-force — /pownd fawrs , fohrs /, n. Physics. a foot pound second unit of force, equal to the force that produces an acceleration equal to the acceleration of gravity when acting on a mass of one pound. Abbr.: lbf [1895 1900] * * * …   Universalium

  • pound-force — /pownd fawrs , fohrs /, n. Physics. a foot pound second unit of force, equal to the force that produces an acceleration equal to the acceleration of gravity when acting on a mass of one pound. Abbr.: lbf [1895 1900] …   Useful english dictionary

  • pound-force — /paʊnd ˈfɔs/ (say pownd faws) noun a unit of force in the f.p.s. system, equal to the gravitational force acting on a mass of one pound, approx. equal to 32.174 pdl or 4.45 newtons. Symbol: lbf …   Australian English dictionary

  • pound-force — noun A unit of force equal to a mass of one avoirdupois pound times a standard acceleration of gravity, equal to about 4.44822 newtons. Symbol lbf or lb …   Wiktionary


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