Re: Water wave question..
- From: "Greg Neill" <gneillREM@xxxxxxxxxxxxxxx>
- Date: Thu, 3 Jul 2008 17:15:54 -0400
"Uncle Ben" <ben@xxxxxxxxxxx> wrote in message
news:339ecfb4-12ec-4399-87e4-7d540eb6dfb5@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
[snippage]
Maybe this set of complications explains why your correspondents have
been dragging their feet with distractions.
It is true that specifying the mass and the diameter of the balolo is
enough to determine how it floats, and stuffing helium inside it won't
change anything except to add a tiny amount of weight.
But even if you had specified the correct mass that would make the
ball float just the way you say in quiet water. my guess is that
nobody would really attempt to answer your question. It's really hard!
I don't know everything, but I do have a Ph. D. in physics, It's
still a hard question.
It's a *very* hard problem, given the not so trivial behavior
of water when it goes into nonlinear regions -- like from
dropping the sphere from above onto the surface causing an
intitial splash. And viscous drag effects, wetting of the
sphere (depends upon the material!) mucking up the drag,
whether or not the sphere will pop out of the water again
when it rises -- more surface tension problems and wetting
issues, and the rate of water flowing off of the sphere
as it rises altering the overall mass as it goes...
Some people have spent whole careers studying what happens
when things are dropped into water! There are very large
hydrodynamics computer codes that are used on some very
impressively large machines to answer questions like this.
.
- References:
- Water wave question..
- From: Spaceman
- Re: Water wave question..
- From: Uncle Ben
- Water wave question..
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