From: spike66 (spike66@attbi.com)
Date: Mon Oct 28 2002 - 21:54:36 MST
Emlyn O'regan wrote:
> Nothing in the
> original problem said that the spheres were hard enough to roll - maybe they
> are made of wet sponge? Or maybe they are extremely sticky?
No problem. Again we take advantage of the hollow
sphere having a larger moment of inertia: suspend
the sticky non-rollable balls with a piece of wire.
Twist the wire some arbitrary angle and release.
The actual angle doesn't matter, so long as it
isnt excessive: the oscillation frequency is not
effected. The oscillation frequency of the hollow
sphere is lower than that of the solid sphere. spike
This archive was generated by hypermail 2.1.5 : Sat Nov 02 2002 - 09:17:50 MST