Re: inertia demo

[Bernard Cleyet <anngeorg@PACBELL.NET>]

"Overall I suspect a big chunk of dry ice may work better than the car
in terms of being a hands-on example of big frictionless inertia, but
as John says, the car is probably easier to come by."

Dry Ice Directory (scroll to bottom):

http://www.dryiceinfo.com/science.htm

bc

David Bowman wrote:

> Regarding John D.'s comment:
>
> > ...
> > A 10kg block of dry ice has noticeable inertia and (if
> > you do it right) has impressively low friction.  But cars
> > have pretty low friction, too, and you can borrow a
> > megagram of car more easily than you can lay hands on
> > large pieces of dry ice.
>
> I suspect that the desirable goal of a low friction/resistance
> condition for the car could be significantly enhanced if the car had
> recently been driven so as to minimize the problem of cold tires

cut

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