Re: MOMENT OF INTERTIA

[John Mallinckrodt <ajmallinckro@CSUPOMONA.EDU>]

On Thu, 17 Dec 1998, Herbert H Gottlieb wrote:

> ... When the hoop is filled, the radial distance between the average
> particle in the filled hoop and the center of rotation decreases.  The
> smaller distance has more influence on the moment of inertia than the
> increase of mass. It not only overcomes the effect of increased mass but
> it actually results in an overall decrease of the moment of inertia.

Hmm.  Careful Herb; adding mass may increase the object's acceleration,
but it certainly can't decrease its moment of inertia.

John from Pomona
(where both added mass and distance from the axis are always nonnegative.)
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