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inch-pound force: in lbf ≡ g 0 × 1 lb × 1 in = 0.112 984 829 027 6167 J: joule (SI unit) J The work done when a force of one newton moves the point of its application a distance of one metre in the direction of the force. [32] = 1 J = 1 m⋅N = 1 kg⋅m 2 /s 2 = 1 C⋅V = 1 W⋅s kilocalorie; large calorie: kcal; Cal ≡ 1000 cal IT = 4. ...
Mass; system unit unit-code symbol or abbrev. notes sample default conversion combinations SI: kilogram: kg kg 1.0 kg (2.2 lb) kg lb. kg lb st; kg st. kg st lb; gram: g g
The equivalence for the pound was given as 1 lb = 453.592 65 g or 0.45359 kg, which made the kilogram equivalent to about 2.204 6213 lb. In 1883, it was determined jointly by the standards department of the British Board of Trade and the Bureau International that 0.453 592 4277 kg was a better approximation, and this figure, rounded to 0.453 ...
kg/m3 lb/yd3 (kg/m3 lb/cuyd) gram per cubic metre: g/m3 g/m 3: 1.0 g/m 3 (0.0017 lb/cu yd) g/m3 kg/m3; g/m3 lb/ft3 (g/cm3 lb/cuft) g/m3 lb/yd3 (g/cm3 lb/cuyd) Imperial & US customary: pound per cubic foot: lb/ft3 lb/cu ft 1.0 lb/cu ft (0.016 g/cm 3) lb/ft3 kg/m3 (lb/cu ft g/m3) lb/ft3 g/m3 (lb/cu ft g/m3) pound per cubic yard: lb/yd3 lb/cu yd
The pound-force is the product of one avoirdupois pound (exactly 0.45359237 kg) and the standard acceleration due to gravity, approximately 32.174049 ft/s 2 (9.80665 m/s 2). [ 5 ] [ 6 ] [ 7 ] The standard values of acceleration of the standard gravitational field ( g n ) and the international avoirdupois pound (lb) result in a pound-force equal ...
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In unit systems where force is a derived unit, like in SI units, g c is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, g c may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2]
Units for other physical quantities are derived from this set as needed. In English Engineering Units, the pound-mass and the pound-force are distinct base units, and Newton's Second Law of Motion takes the form = where is the acceleration in ft/s 2 and g c = 32.174 lb·ft/(lbf·s 2).