Ground reaction force

Ground reaction force

In classical mechanics the term ground reaction force (GRF) refers generically to any force exerted by the ground on a body in contact with it. [cite web
last =
first =
authorlink =
coauthors =
title = Definition of ground reaction force
work =
publisher = Answers.com
date =
url = http://www.answers.com/topic/ground-reaction-force
format =
doi =
accessdate = 2008-06-08
] For example, a person standing on the ground exerts a force on it (equal to the person's weight) and at the same time an equal and opposite ground reaction force is exerted by the ground on the person. The use of the word reaction derives from , which essentially states that if a force, called "action", acts upon a body, then an equal and opposite force, called "reaction", must act upon another body. The force exerted by the ground is commonly referred to as the reaction, although the distinction between action and reaction is completely arbitrary and the expression "ground action" would be in principle equally acceptable.

External links

* Vectorial definition of GRF from the Health Sciences Center of the [http://moon.ouhsc.edu/dthompso/gait/kinetics/GRFBKGND.HTM University of Oklahoma]

References



Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Ground Defense Force! Mao-chan — Mao chan redirects here. For the figure skater often referred to in the Japanese press by that nickname, see Mao Asada. Earth Defender! Mao chan 陸上防衛隊まおちゃん (Ground Defense Force! Mao chan) Genre Comedy, Magical girl …   Wikipedia

  • Initial Reaction Force — The Initial Reaction Force (IRF), also known as the Internal Reaction Force [http://www.smh.com.au/news/World/David Hicks affidavit/2004/12/10/1102625527396.html The David Hicks affidavit] , Sydney Morning Herald , 2004 12 10] or Extreme Reaction …   Wikipedia

  • United States Marine Air-Ground Task Force Reconnaissance — See also: United States Marine Corps Special Operations Capable Forces The United States Marine Corps have many reconnaissance elements that are valuable to a Marine Air Ground Task Force (MAGTF) by providing the force and component commanders [i …   Wikipedia

  • Force platform — Force platforms or force plates are measuring instruments that measure the ground reaction forces generated by a body standing on them, in order to quantify balance, gait, and other parameters of biomechanics. Most common areas of application are …   Wikipedia

  • Reaction (physics) — In classical mechanics, Newton s third law states that forces occur in pairs, one called the Action and the other the Reaction ( actio et reactio in Latin). Both forces are equal in magnitude and opposite in direction. The distinction between… …   Wikipedia

  • Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …   Wikipedia

  • g-force — This article is about a type of acceleration. For other uses, see G force (disambiguation). This top fuel dragster can accelerate from zero to 160 kilometres per hour (100 mph) in 0.86 seconds. This is a horizontal acceleration of 5.3 g …   Wikipedia

  • Normal force — FN represents the normal force In mechanics, the normal force (occasionally N) is the component, perpendicular to the surface of contact, of the contact force exerted on an object by, for example, the surface of a floor or wall, preventing the… …   Wikipedia

  • Reaction–diffusion system — Reaction–diffusion systems are mathematical models which explain how the concentration of one or more substances distributed in space changes under the influence of two processes: local chemical reactions in which the substances are transformed… …   Wikipedia

  • Force field — For other uses, see Force field (disambiguation). A force field, sometimes known as an energy shield, force shield, or deflector shield is a concept of a field tightly bounded and of significant magnitude so that objects affected by the… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”