coefficient of friction

World English Dictionary
coefficient of friction
 
n
mechanical engineering the force required to move two sliding surfaces over each other, divided by the force holding them together. It is reduced once the motion has started

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
coefficient of friction  
A measure of the amount of resistance that a surface exerts on or substances moving over it, equal to the ratio between the maximal frictional force that the surface exerts and the force pushing the object toward the surface. The coefficient of friction is not always the same for objects that are motionless and objects that are in motion; motionless objects often experience more friction than moving ones, requiring more force to put them in motion than to sustain them in motion. ◇ The static coefficient of friction is the coefficient of friction that applies to objects that are motionless. ◇ The kinetic or sliding coefficient of friction is the coefficient of friction that applies to objects that are in motion. See also drag, friction.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature