World Library  
Flag as Inappropriate
Email this Article

Foot-pound force

Article Id: WHEBN0024441404
Reproduction Date:

Title: Foot-pound force  
Author: World Heritage Encyclopedia
Language: English
Subject: James Prescott Joule, .454 Casull, Nissan A engine, Toyota HD engine, Toyota KD engine, Effective torque, Toyota ND engine, Toyota B engine, Toyota N engine, Scottsdale Gun Club
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Foot-pound force

Not to be confused with Pound-foot (torque) or Foot-poundal.

The foot-pound force (symbol: ft·lbf or ft·lbf), or simply foot-pound (symbol: ft·lb) is a unit of work or energy in the Engineering and Gravitational Systems in United States customary and imperial units of measure. It is the energy transferred on applying a force of one pound-force (lbf) through a displacement of one foot. The corresponding SI unit is the joule.

Usage

The foot-pound is often used to specify the muzzle energy of a bullet in small arms ballistics, particularly in the United States.

"Foot-pound" is sometimes also used as a unit of torque (see Pound-foot (torque)). In the United States this unit is often used to specify, for example, the tightness of a bolt or the output of an engine. Although they are dimensionally equivalent, energy (a scalar), and torque (a vector) are distinct physical quantities. 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.

Conversion to other units

Energy units

1 foot-pound is equivalent to:

Power units

  • 1 watt44.25372896 ft·lbf/min = 0.737562149-91-9 ft·lbf/sec
  • 1 horsepower (mechanical) = 33,000 ft·lbf/min = 550 ft·lbf/s

See also

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.