Physics 1135 (Engineering Physics I)

Lecture 20: Rotational kinematics and energetics

Objectives: In this lecture, students will learn to
  • extend kinematics to rotational quantities
  • relate angular velocity and acceleration to linear velocity and acceleration
  • interpret the meaning of the quantity moment of inertia
  • calculate moments of inertia using the parallel axis theorem
  • define rotational kinetic energy
  • explain rolling without slipping in terms of rotation about center of mass plus translation of center of mass
  • apply energy conservation to problems involving rotation
Lecture Notes: Videos:

Introduction Video_1.mp4
Angular kinematics quantities Video_2.mp4 with captions
Relationship to linear quantities Video_3.mp4 with captions
Rolling without slipping Video_4.mp4 with captions
Rotational kinetic energy and moment of inertia Video_5.mp4 with captions
Demo and example: Race of hoop and disk Video_6.mp4 with captions

Homework assignment: HW #20