FRICTION - FRICTION For Newtonian Mechanics static friction...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
FRICTION For Newtonian Mechanics, static friction is a real non-conservative contact force between two rough surfaces that are at rest with respect to each other. Static friction reacts equally and opposite to the net external tangential force which is attempting to cause relative motion between the two surfaces. Three conditions are required to produce a static friction force: there must be contact between the two stationary surfaces, Σ f n > 0; the surface contact must be rough, s μ > 0; and there must be a net tangential force attempting to produce motion between the surfaces, Σ f g tan > 0. The magnitude of the static friction force will range from zero up to f s (max). F s (max) = s f n where f n is the net normal force between the surfaces and s is the coefficient of static friction. The direction of f s will be opposite the direction of the net tangential force and its magnitude will equal the magnitude of the net tangential force. For Newtonian Mechanics, kinetic friction is a real non-conservative contact force
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/29/2010 for the course PHYSICS 195 taught by Professor Goldstein during the Spring '10 term at Mesa CC.

Ask a homework question - tutors are online