Foot-pound force
From Wikipedia, the free encyclopedia
The foot-pound force, or simply foot-pound (symbol: ft·lbf or ft·lb) is a unit of work or energy (a scalar) and also a unit of torque (a vector).
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[edit] Other Units of Energy
One foot-pound force is the amount of energy expended when one pound-force acts through a distance of one foot along the direction of the force.
1 foot-pound force is equivalent to:
- 1.3558179483314004 joules (exactly)
- 13558179.483314004 ergs (exactly)
- 12 inch-pound force (exactly)
- 192 inch-ounce force (exactly)
- 0.001285067 British Thermal Unit
- 0.323832 calorie
- 0.000323832 "food calorie," also called kcal or Calorie (capitalized)
[edit] Related Units of Power
The foot-pound force per minute (ft·lbf/min), foot-pound force per second (ft·lbf/s), and horsepower are imperial units of power derived from the foot-pound force.
- 1 watt ≈ 44.25372896 ft·lbf/min
- 1 horsepower (mechanical) = 33000 ft·lbf/min = 550 ft·lbf/s
[edit] Unit of torque
As a unit of torque, one foot-pound is the torque created by one pound force acting at a perpendicular distance of one foot from a pivot point. When used to describe the output of an automobile engine, this unit is usually called the pound-foot (lb-ft).
1 foot-pound is equivalent to:
- 1.3558179483314004 newton meter (exactly)
