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:
(formulas) (short animation)


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

D'Alembert's Principle in particular: (queued, might review it in a followup)


On Thu, Dec 20, 2012 at 1:32 PM, Peter Duveen <> 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?