Weather.gov > Pueblo, CO > Annual Summary 2014 -- Colorado Springs. CLIMATE REPORT NATIONAL WEATHER SERVICE PUEBLO 1010 AM MST SUN JAN 4 2015 ................................... ...THE COLORADO SPRINGS CO CLIMATE SUMMARY FOR THE YEAR OF 2014... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1872 TO 2015 WEATHER OBSERVED NORMAL DEPART VALUE DATE(S) VALUE FROM NORMAL ................................................
Traction, or tractive force, is the force used to generate motion between a body and a tangential surface, through the use of dry friction, though the use of shear force of the surface is also commonly used.
In layman's terms, friction is a force that resists one surface from sliding or rolling over another. Therefore, it can be said that friction only occurs when two surfaces are in relative motion, such as when a crankshaft is rotating in a journal bearing or when a ball bearing is rolling along its raceway.