![]() No name has yet been given to the unit of mass and, in fact, as we have developed the theory of dynamics no name is necessary. At the Earth's surface, an object with a mass of 1 slug weighs approximately 32.2 lbf or 143 N. One slug is a mass equal to 32.1740 lb (14.59390 kg) based on standard gravity, the international foot, and the avoirdupois pound. A slug is defined as the mass that is accelerated by 1 ft/s 2 when a net force of one pound (lbf) is exerted on it. poundal, a derived unit of force in a force-based system). Systems of measure either define mass and derive a force unit or define a base force and derive a mass unit (cf. The slug is a derived unit of mass in a weight-based system of measures, most notably within the British Imperial measurement system and the United States customary measures system. ![]()
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