On Mon, Apr 19, 2010 at 3:32 PM, Sudhir Desai <sudhir.desai@gmail.com>wrote:

> not trying to be an ass, just trying to eliminate all trivial (for the
> sake of explanation) variables. :)
>

Heh. Trouble is, your whole calculation comparison puts the entire mass of
the wheel-tire unit at the perimeter, which is a non-trivial
oversimplification. It's on the level of the classic "assume a spherical cow
in a vacuum..."
<http://en.wikipedia.org/wiki/Spherical_cow>

--
John Bange