
The pound-force is a non-SI unit of force or weight (properly abbreviated "lbf" or "lbf"). The pound-force is equal to a mass of one pound multiplied by the standard acceleration due to gravity on Earth (which is defined as exactly 9.806 65 metre/second², or exactly 196,133/6096 foot (unit of length)/second², or approximately 32.174 05 ft/s²). Though pounds-force had been used in low-precision measurements since the 18th century, they were never well-defined units until the 20th century. It was in 1901 when the CGPM first adopted a ''standard acceleration of gravity'' for the purpose of defining grams-force and kilogram-force, a value often borrowed to define pounds-force, though other values such as 32.16 ft/s² (9.80237 m/s²) have been used as well. In SI units, a pound-force is equal to exactly 4.448 221 615 260 5 newtons, if the metric standard acceleration of gravity is borrowed for this purpose. ''See'' pound for a more complete discussion of customary units of force and mass. Units of force Imperial units Customary units in the United States
pound-force
See other meanings of words starting from letter:
Words begining with Pound-force:
Pound-force
Pound-force
Pound-force_per_square_inch
Pound-force_per_square_inch
Pound-force
The pound-force is a non-SI unit of force or weight (properly abbreviated "lbf" or "lbf"). The pound-force is equal to a mass of one pound multiplied by the standard acceleration due to gravity on Earth (which is defined as exactly 9.806 65 metre/second², or exactly 196,133/6096 foot (unit of length)/second², or approximately 32.174 05 ft/s²). Though pounds-force had been used in low-precision measurements since the 18th century, they were never well-defined units until the 20th century. It was in 1901 when the CGPM first adopted a ''standard acceleration of gravity'' for the purpose of defining grams-force and kilogram-force, a value often borrowed to define pounds-force, though other values such as 32.16 ft/s² (9.80237 m/s²) have been used as well. In SI units, a pound-force is equal to exactly 4.448 221 615 260 5 newtons, if the metric standard acceleration of gravity is borrowed for this purpose. ''See'' pound for a more complete discussion of customary units of force and mass. Units of force Imperial units Customary units in the United States
Pound-force
pound-force
See other meanings of words starting from letter:
P
PA | PB | PC | PD | PE | PF | PG | PH | PI | PJ | PK | PL | PM | PN | PO | PR | PS | PT | PU | PW | PX | PY | PZ |Words begining with Pound-force:
Pound-force
Pound-force
Pound-force_per_square_inch
Pound-force_per_square_inch
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