Re: Long rod question




"Jethro" <jethro_uk@xxxxxxxxxxx> wrote in message news:1175096865.605101.266100@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi all,

apologies if this is a numpty question, but it's been bugging me for a
while/

Assuming you could make a rod millions of miles long, and could
connect it to another planet, would it be possible to push/pull the
rod to communicate with the other end.

More importantly, how fast would the "information" travel ? Surely,
instinct tells me it must be "instant". In that case, does it mean
that the information has travelled faster-than light ?

The push might only be 0.1m/s ...

thanks in advance

Tap it with a hammer. You'll communicate at the speed
of sound in [rod material].
There are no truly rigid rods in nature, what you'll find is your
rod is spaghetti.

.



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