Foot-pound

Foot-pound

Das foot-pound ist eine britische und US-amerikanische Einheit sowohl der Arbeit oder Energie als auch des Drehmoments (dort auch Pound-foot). Das Einheitenzeichen ist ft·lb.

Ein foot-pound entspricht genau 1,355.817.948.331.400.4 J (Joule) und berechnet sich mit:

1 \,\mathrm{ft} \cdot \mathrm{lb} = \mathrm{lb} \cdot g_\mathrm{Gravitation} \cdot \mathrm{ft} = 0.45359237 \,\mathrm{kg} \,\cdot \,9.80665 \,{\mathrm{m} \over \mathrm{s}^2} \cdot \mathrm{lb} = 1.35581\dots \,\mathrm{kg} {\mathrm{m}^2 \over \mathrm{s}^2} = 1.355\,817\,948\,331\,400\,4 \,\mathrm{J}

550 Foot-pound in der Sekunde entsprechen einem PS (763 Watt). Das foot-pound kann folgendermaßen berechnet werden:

W = F x D

Wobei W die Arbeit (in foot-pound), F die Kraft (in pound) und D die Strecke (in foot) über die die Kraft angewendet wird, ist.


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  • Foot pound — (Mech.) A unit of energy, or work, being equal to the work done in raising one pound avoirdupois against the force of gravity through a vertical distance of one foot. [1913 Webster] …   The Collaborative International Dictionary of English

  • foot-pound — [foot′pound΄] n. a basic unit of energy or work in the FPS system, equal to the amount of work needed to raise a weight of one pound a distance of one foot (1.3558 joule): symbol, ft lb …   English World dictionary

  • foot-pound — /foot pownd /, n. Physics. a foot pound second unit of work or energy, equal to the work done by a force of one pound when its point of application moves through a distance of one foot in the direction of the force. Abbr.: ft lb [1840 50] * * * …   Universalium

  • foot-pound|al — «FUT POWN duhl», noun. a unit of work or energy, equivalent to the work done by a force of one poundal acting through a distance of one foot. It is equal to a foot pound divided by the acceleration due to gravity, or about 32.2 feet per second… …   Useful english dictionary

  • foot-pound — foot′ pound′ n. phs a unit of energy equal to the energy expended in raising one pound a distance of one foot Abbr.: ft lb • Etymology: 1840–50 …   From formal English to slang

  • foot-pound — noun a unit of work equal to a force of one pound moving through a distance of one foot • Hypernyms: ↑work unit, ↑heat unit, ↑energy unit • Part Holonyms: ↑foot ton * * * ˈ ̷ ̷| ̷ ̷ noun (plural …   Useful english dictionary

  • Foot-pound — Pied livre Le pied livre force ou pied livre (foot pound force ou foot pound en anglais, symbole : ft·lbf or ft·lb) est une unité de mesure anglo saxonne de travail ou d énergie. Elle correspond au travail développé par une force de une… …   Wikipédia en Français

  • foot-pound — Energy expended, or work done, in raising a mass of 1 pound a height of 1 foot vertically against gravitational force. * * * foot pound pau̇nd n, pl foot pounds a unit of work equal to the work done by a force of one pound acting through a… …   Medical dictionary

  • foot-pound — noun A unit of work done, or energy expended, when a force of one pound acts through a distance of one foot See Also: foot pound second, foot poundal …   Wiktionary

  • foot-pound force — footˈ pound or foot pound force noun The energy needed to raise a mass of one pound through the height of one foot in normal gravity • • • Main Entry: ↑foot …   Useful english dictionary

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