Pound-foot (torque)
Encyclopedia
A pound-foot is a unit of torque
(a vector). One pound-foot is the torque created by one pound force
acting at a perpendicular distance of one foot from a pivot point.
One pound-foot is exactly newton meters
.This is the product of the international pound , standard gravity and the international foot
The name "pound-foot", intended to minimize confusion with the foot-pound as a unit of work, was apparently first proposed by British physicist Arthur Mason Worthington
. However, foot-pound (ft·lb or ft·lbf) is also sometimes used interchangeably with "pound-foot" to express torque.
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....
(a vector). One pound-foot is the torque created by one pound force
Pound-force
The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...
acting at a perpendicular distance of one foot from a pivot point.
One pound-foot is exactly newton meters
Newton metre
A newton metre is a unit of torque in the SI system. The symbolic form is N m or N·m, and sometimes hyphenated newton-metre...
.This is the product of the international pound , standard gravity and the international foot
The name "pound-foot", intended to minimize confusion with the foot-pound as a unit of work, was apparently first proposed by British physicist Arthur Mason Worthington
Arthur Mason Worthington
Arthur Mason Worthington CB, FRS was an English physicist and educator. He is best known for his work on fluid mechanics, especially the physics of splashes; for observing those, he pioneered techniques of high speed photography...
. However, foot-pound (ft·lb or ft·lbf) is also sometimes used interchangeably with "pound-foot" to express torque.