Lecture 11 - Torque

author: Ramamurti Shankar, Department of Applied Physics, School of Engineering and Applied Science, Yale University
recorded by: Yale University
published: June 3, 2010,   recorded: October 2006,   views: 3821
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Description

This lecture is a continuation of an analogue to Newton's law: τ= lα. While previous problems examined situations in which τ is not zero, this time the focus is on extreme cases in which there is no torque at all. If there is no torque, α is zero and the angular velocity is constant. The lecture starts with a simple example of a seesaw and moves on to discuss a collection of objects that are somehow subject to a variety of forces but remain in static equilibrium.

Reading assignment:

Wolfson and Pasachoff, Physics with Modern Physics, chapters 13-14.

Resources: Problem Set 6 [PDF] Problem Set 6 Solutions [PDF] Sample Midterm Examination [PDF]

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