Modified: April 14, 2008

Angular Kinetics

Objectives:
  • Define moment of inertia
  • Explain:
    • How the human body's moment of inertia may be manipulated
    • Newton's laws of motion as they apply to angular motion
  • Define angular impulse and angular momentum, and explain the relationship between angular impulse and angular momentum

Powerpoint slides used to discuss Chapter 7.
 

Chapter 7 Summary

  1. Angular kinetics basics, the cause of angular motion, are explained by angular analogues of Netwon's three Laws of Motion.
  2. Moment of inertia is the angular analogue of mass; the moment of inertia is the method used to quantify angular inertia and is dependent upon the magnitude of the mass and the distribution of the mass in relation to the axis of rotation.
  3. Just as linear momentum is the quantity of linear motion, angular momentum is the quantity of angular motion.
  4. Angular momentum is equal to the product of: 1) moment of inertia and 2) angular velocity.