Department of Physics and Astronomy
Michigan State University
PHY231 Fall 1997

Lecture 8: September 12

Homework 3 due before class

Reading before class: C/J 4.5 - 4.8

Topics and Concepts

• Newton's law of gravitation
  • Estimate the mass of the Earth
• Differentiate between mass and weight
• Normal force
• Apparent weight
• Tension Force

Examples

• Attraction of Gravity (C/J example 5, page 98)
• Hubble Space Telescope (C/J example 6, page 100)

Transparencies

• Fig. 4.17 (man in elevator)

Reading for next class: C/J 4.9-4.12

PHY 231

This document http://www.pa.msu.edu/courses/1997fall/PHY231/lect08.html was last updated on 20 August 1997 by Thomas Glasmacher