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  1. Libra (unidad de masa) La libra ( lb) actualmente es una unidad de masa, usada desde la Antigua Roma como unidad de peso. 1 La palabra (derivada del latín) significa «escala o balanza», 2 3 y todavía es el nombre de la principal unidad de masa usada en los Estados Unidos y en algunos países de habla hispana. 4 .

  2. en.wikipedia.org › wiki › Slug_(unit)Slug (unit) - Wikipedia

    A slug is defined as a mass that is accelerated by 1 ft/s 2 when a net force of one pound (lbf) is exerted on it. [2] One slug is a mass equal to 32.17405 lb (14.59390 kg) based on standard gravity, the international foot, and the avoirdupois pound. [3] In other words, at the Earth's surface (in standard gravity), an object with a mass of 1 ...

  3. en.wikipedia.org › wiki › Grain_(unit)Grain (unit) - Wikipedia

    64.79891 mg. A grain is a unit of measurement of mass, and in the troy weight, avoirdupois, and apothecaries' systems, equal to exactly 64.798 91 milligrams. It is nominally based upon the mass of a single ideal seed of a cereal. From the Bronze Age into the Renaissance, the average masses of wheat and barley grains were part of the legal ...

  4. The pound or pound-mass is a unit of mass used in British imperial and United States customary systems of measurement. Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.453 592 37 kilograms, and which is divided into 16 avoirdupois ounces. [1]

  5. en.wikipedia.org › wiki › Earth_massEarth mass - Wikipedia

    An Earth mass (denoted as or , where 🜨 is the standard astronomical symbol for Earth ), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M🜨 = 5.9722 × 1024 kg, with a relative uncertainty of 10 −4. [2] It is equivalent to an average density of 5515 kg/m3.

  6. The pound or pound-mass (abbreviations: lb, lbm, lbm, ℔[1] ) is a unit of mass used in the imperial, United States customary and other systems of measurement. A number of different definitions have been used, the most common today being the international avoirdupois pound which is legally defined as exactly 0.45359237 kilograms. The unit is descended from the Roman libra (hence the ...

  7. Funt (masa) Funt ( ang. pound lub pound-mass; lb, lbm, lbm, ℔ [1]) – pozaukładowa jednostka masy wywodząca się od rzymskiej libry. Miara funta była różna na przestrzeni wieków w różnych państwach, zwykle wynosiła pomiędzy 0,4 a 0,5 kilograma. Nazwa jednostki wywodzi się od staroangielskiego słowa pund, a ta od słowa Pfund ...