Re: [Phys-l] buoyancy on a submerged pole

[Chuck Britton <cvbritton@embarqmail.com>]

I understand what you (and everybody) else is saying.

I'm disagreeing and waiting to be proven wrong.

I maintain that attaching the empty box to the bottom of the aquarium 
will produce a measurable upward force (and deflection) of the glass 
bottom. The deflection should be easy to observe.

Actually it would (will?) be seen as reduction in the downward 
deflection of the bottom.


At 12:16 AM +0000 11/4/10, Philip Keller wrote:
> I don't understand: are you saying that you believe the glue is in 
> tension?  I don't think that can be true.  I think the glue would be 
> in compression.  Start with an empty aquarium with the box already 
> glued to the bottom.  Now add water.  There is no point when you can 
> convince me that the water begins pulling upward on the box.