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Similarly, an inch-pound (or pound-inch) is the torque of one pound of force applied to one inch of distance from the pivot, and is equal to 1 ⁄ 12 lbf⋅ft (0.1129848 N⋅m). It is commonly used on torque wrenches and torque screwdrivers for setting specific fastener tension.
inch⋅ounce-force 141.6 in oz The newton-metre or newton-meter (also non-hyphenated, newton metre or newton meter ; symbol N⋅m [ 1 ] or N m [ 1 ] ) [ a ] is the unit of torque (also called moment ) in the International System of Units (SI).
≡ 0.1 nm astronomical unit: au ... pound (metric) ≡ 500 g = 500 g pound (troy) lb t ≡ 5760 grains ... inch-pound force: in lbf
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity.
Both energy and torque can be expressed as a product of a force vector with a displacement vector (hence pounds and feet); energy is the scalar product of the two, and torque is the vector product. Although calling the torque unit "pound-foot" has been academically suggested, both are still commonly called "foot-pound" in colloquial usage.
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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).
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