On Fri, Jun 25, 2004 at 07:32:56PM +1200, reinaldo@IHUG.CO.NZ wrote:
> Hi PICsters!!
> I had a curious thought the other day, but since the local
> grocery shop doesn't have the required apparatus for my
> experiment, i thought i'll post it on the list.
> here's what you'll need:
> -an incredibly long and rigid rod. (all you sickos stop
> giggling, this is a serious sience experiment)
> -a friend in a distant galaxy
>
> imagine the rod to be a few light years long, and very
> rigid, and it has a pivot point somewhere in the middle. if
> you push down on one end, wouldn't the other end move
> immediatly???

Nope. Inertia. In fact it may be quite a while before the impulse reaches
the tip.

Also the amount of force required to move such an object is so great, that
no matter how rigid it is, it'll snap. Even in a thought experiment.

> what actually travels along the rod to move
> the other end?? does anything travel at all?
>
> please post your thoughts

You got em.

BAJ

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