Date: Dec 25, 2012 1:48 PM
Author: kirby urner
Subject: Re: Physics problem --ball rolling down an inclined plane

Random treatment of the topic:

http://www.batesville.k12.in.us/physics/phynet/mechanics/RotMechanics/fall_slide_roll.htm
(formulas)

http://youtu.be/7mxV6f5nuJY   (short animation)

Compare:

Lectures on Rolling = Translation + Rotation (set up energy conservation
approach)

http://youtu.be/UOJsuXMtwqA  (white board)

http://youtu.be/EkkJw1LiDTE  (slides)

D'Alembert's Principle in particular:

http://youtu.be/PlbgIGH4kmE   (queued, might review it in a followup)

Kirby

On Thu, Dec 20, 2012 at 1:32 PM, Peter Duveen <pduveen@yahoo.com> wrote:

> High school physics students are taught so-called Newtonian mechanics, but
> cannot solve the simple problem of a ball rolling down an inclined plane.
> Rigid bodies are outside the purview of Newtonian mechanics, as Newton
> himself seems to have admitted in The Principia. However, the application
> of D'Alembert's Principle yields a solution to this simple problem. The
> problem becomes particularly simple when worked out for a thin cylinder or
> ring rolling down an inclined plane. Should high school students be
> introduced to D'Alembert's Principle?
>