Affiliation:
1. School of Physics, University of Sydney , Sydney 2006, Australia
Abstract
The coefficient of sliding friction is usually regarded as a constant for any given surfaces although it is sometimes known to vary with sliding speed. An experiment is described where the coefficient of friction for a billiard ball decreases to a very small value as the sliding speed decreases to zero, after which the ball starts rolling without sliding. A simple theoretical explanation is provided.
Publisher
American Association of Physics Teachers (AAPT)
Subject
General Physics and Astronomy