Here is a movie from Powerlabs.org
illustrating some concepts of angular momentum. First of all, do not try to repeat
the experiments of Sam Barros. |
The moment of inertia of a disc of radius L and density rho is I = Pi rho L4/4. If omega is the angular speed (35'000 RPM in the movie), then E=omega2 I/2 is the energy of the disc.
|Please send comments to maths21a.harvard.edu|
|Oliver Knill, Maths21a, Multivariable Calculus, Summer 2005, Department of Mathematics, Faculty of Art and Sciences, Harvard University|