Re: buoyancy puzzle (long!)

[Gary Turner <turner@MORNINGSIDE.EDU>]

> Can anyone think of a simple,
> decisive experiment to settle the issue? Carl
> --
I think it is down to B or C.  I say C for reasons posted.

If anyone has time - get a clear tube (fluorescent light tube cover), make
a couple of objects up of different densities that fit snugly inside.
Grease well so that they will form a watertight seal with the inside of the
tube.  Connect them with a string through a spring gauge & have them
partially inside the tube, one on each end.  Go swimming.

If the spring guage moves, then each one is subject to a different buoyant
force.  The spring guage will read the difference in the buoyant force
which should change as you take it from air to water.
If it is one object, the spring guage will not be affected.

Sorry, I don't have time & I think our pool supervisors would frown on such
things.  Grease is difficult to get out of a pool.  It's not warm enough
here yet to hit the lakes.