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Information About

Foot-pound





CONVERSIONS


1 foot-pound force is:
  • 1.355 817 948 331 400 4 J (exactly)

  • 1.355 817 948 331 400 4 Nm (exactly)

  • 0.001285 British Thermal Units

  • 0.323832 Calories



UNIT OF WORK OR ENERGY


To calculate a foot-pound ''force'', you can use this formula,



ORIGINS OF FOOT-POUND FORCE

Foot-pound ''force'' is derived from the original equation of KE = wz.
Where as KE is kinetic energy, w is the weight of the body and z is the average velocity of the falling body times the time of that fall.

These are the factors for w.
  • g/g''c''

  • Where as w is weight, m is mass, g is the local acceleration of gravity and g''c'' is the dimensional constant.


These are the factors for z.
  • v---t

  • Where as z is the average velocity of the falling body times the time of the fall, ½ is the coefficient to find the average velocity, v is the velocity and t is the time of fall.


When wz is fully factored to its four UOM (Units of measure)than reduced, the two remaining factors left are F and d. With these two variables left, this proves mathematically that energy of motion is force through distance, as in the original experiment of the two falling objects; force though distance

The four UOM are F (pound ''force'') , d (foot) , m mass (pound ''mass'') , t time (second).


UNIT OF TORQUE


The foot-pound ''force'' is also the unit of Torque , which is conventionally expressed in SI units as Newton-meters rather than joules. Sometimes the order of the units is reversed for torque, expressed as poundral rather than foot-pound ''force''.


SEE ALSO