Can filling with H2O
Consider a metal can which is open on one end and which has a small
in the bottom. This can is released in a glass container slightly wider
than the can and into which enough water has been added so that it will
cover the can after it sinks. As the can fills with water and eventually
sinks to the bottom, the height of the water in the glass changes.
Exactly how can this be explained.
The metal can has some volume to it. When the water has entered the
and displaced all the air that was in it, the water level will be raised a
little bit, because now the volume under the surface of the water is equal
to the volume of the water plus the volume of the metal can.
Richard Barrans Jr., Ph.D.
Click here to return to the Physics Archives
Update: June 2012