[Phys-L] Re: Buoyancy question

[betwys1 at SBCGLOBAL.NET (Brian Whatcott)]

Hmmm...Gary's lock setting seemed like a valiant attempt at a physical
realization of a closed container.

But last week, when I walked up a flight of locks near Kenilworth, it was
visibly evident that the upper water level at a lock was being maintained
by a weir,and the lock gates set to trammel the flow were leaky devices,
  as shown by the following picture:

<http://pg.photos.yahoo.com/ph/betwys1@sbcglobal.net/detail?.dir=/4ee6&.dnm=1c47.jpg&.src=ph&.tok=phRIQMCBh9i7Nllq>View
PC020103.jpg

Brian W

At 02:21 PM 12/10/2004,  Gary Turner, you wrote:

> A coal barge is sitting in a lock (ok, I'm originally from Northern England
> where canals are abundant, you could also use a toy boat in a water tank).
> It dumps its cargo overboard - which then sinks.  What happens to -
>
> 1) the height of the barge above the water level? (this is intuitive)
> 2) the water level in the lock? (less intuitive, but still not too difficult)
> 3) the height of the boat when compared to the lock walls?


Brian Whatcott    Altus OK    Eureka!