Department of Physics and Astronomy
Michigan State University
PHY231 Fall 1997

Lecture 9: September 15

Reading before class: C/J 4.9 - 4.12

Topics and Concepts

• Static and Dynamic Friction
• Application of Newton's laws
• Free body diagrams in equilibrium
• Free body diagrams not in equilibrium

Equations

• static friction
• kinetic friction

Examples

• Force to Start a Sled (C/J example 10, page 109)
• Traction for the Head (C/J example 11, page 112)
• Traction for the Foot (C/J example 12, page 112)
• Climbing Jet (C/J example 14, page 115)
• Driving in San Francisco (C/J example 19, page 121)

Reading for next class: C/J 5.1 - 5.6

PHY 231

This document http://www.pa.msu.edu/courses/1997fall/PHY231/lect09.html was last updated on 20 August 1997 by Thomas Glasmacher