PHY 181, Fall, 2006

Week 10
  Main Objectives
bulletBe able to use Coulomb's Law of electric forces
bulletBe able to describe the similarities and differences between electric and gravitational forces
bulletBe able to explain how a charged object can attract an uncharged object
bulletBe able to explain the difference between conductors and insulators
bulletUnderstand the correspondence between linear and rotational motion and be able to apply this to the solution of problems with constant angular acceleration
bulletBe able to determine the location of an object's center of mass
bulletBe able to find the cross product of two vectors
bulletBe able to find the torque due to a force
bulletBe able to use the rotational equivalent of F=ma to predict an object's motion
bulletBe able to apply the concepts of center of gravity and torque to the stability of objects
bulletBe able to calculate the rotational inertia of an object
Tuesday Lecture on electric charges. Overview of rotational motion. 

Outside of class:  Read Ch. 25 Sec 1, 2 and 4.  Complete Ch. 25 workbook exercises 5, 9, and 23.  Complete Ch 25 homework 11, 14, 40, 48, and 60 to be turned on Thursday.  Read Ch. 13 Sec 1, 3, and 9.  Complete Ch. 13 workbook exercises 1, 4, and 8. 

Thursday Introduction to the cross product of two vectors and the concept of torque.  Talk about rotational inertia if we have time.

Outside of class:  Read Ch. 13 Sec 2, 4 and 5.   Complete workbook exercises 16 and 18.  Complete Ch. 13 homework problems 1, 7, 14, 39a and 41 to be turned in tomorrow.
Friday Complete any discussion left over from yesterday.   Discuss center of mass.

Outside of class: Read  Chapter 13 Sec 10.   Complete workbook exercises 33, 34, and 38.  Complete homework problems 10, 17, 20, 22, and 66 to be turned in on Thursday.