PHY 101 - Meeting #3
Topic(s)
Forces that are not constant:
Circular motion and its cause
Projectile motion
Torque and center of mass
Newton's law of universal gravitation
Gravity near and far away from the earth's surface
Reading List
Pages 56-96
Objectives
Understand what is meant by uniform circular motion (UCM)
Know the direction of the acceleration of an object moving in UCM
Realize that the centripetal force is a net force, not an identifiable external force -- some identifiable force causes UCM
Be able to qualitatively describe projectile motion
Realize that an object's horizontal and vertical motion are independent
Use the idea of "NARANG" (on page 66) to simplify the description of projectile motion
Understand the difference between stable, unstable and neutral equilibrium
Describe what is meant by an "inverse square law force"
Define Newton's law of universal gravitation in words and as an equation
Recognize that the value of "g" is determined by the size and mass of a celestial object
Define what is meant by the term "gravatational field"
Homework
Chapter 4 Questions: 3, 4, 6, 9, 13, 17, 24, 30
Chapter 4 Exercises: 2, 5, 13
Chapter 5 Questions: 5, 12, 20, 23, 26, 34
Chapter 5 Exercises: 5, 6, 7
Simulations:
Graphical Addition of Vectors
No computer homework for this week!