Physics 1135 (Engineering Physics I)

Lecture 21: Torque

Objectives: In this lecture, students will learn to
  • identify torque as the cause for angular acceleration
  • construct the cross product of two vectors
  • calculate torque created by a force
  • analyze rolling without slipping using rotational dynamics
  • apply rotational and linear dynamics to problems involving coupled rotation and translation
Lecture Notes: Videos:

Demo: turning a bolt Video_2.mp4 with captions
Cross product Video_3.mp4 with captions
Definition of torque Video_4.mp4 with captions
Torque and angular acceleration Video_5.mp4 with captions
Example 1: Rotating rigid object Video_6.mp4 with captions
Example 2: Rolling without slipping Video_7.mp4 with captions
Example 3: Coupled objects Video_8.mp4 with captions
Additional example problem Extra.mp4