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

[Chuck Britton <cvbritton@embarqmail.com>]

Great start  ! !  ! !

Now we 'just' need to rig a simple deflection meter (mirror + laser 
beam) to quantify the deflection of the tubs bottom.
My hypothesis is that the deflection will be 'as if' the lid were 
exerting an upward force equal to the displaced volume of water. 
(with correction for the lids weight itself)

Keeping a constant depth of water might make analysis simpler.
(But John Clement has already let the cat out of this particular bag.  ;-) )


At 11:55 AM -0400 11/5/10, Robert Cohen wrote:
> For what it is worth, I placed a large shallow screw-on top (like the
> lid to a can of baby formula but deeper) on the bottom of a larger
> container.  I then filled the container with water, holding down the lid
> while it filled.  I then let go.
>
> No adhesives were used.
>
> You can predict what happened and then look at the pictures:
> <http://www.esu.edu/physics/cohen/phys-l/>