PURPOSE: To show the effect of density on bouyancy.
DESCRIPTION: SVarious objects are placed in an aquarium.
Note that this demo can be used to show the range of a "velocity
efflux". That is, it can be used to show the range of water jets from different
heights along a water column. The range of each jet is measured at the level of the bottom
of the container. The center jet has the greatest range; each pair of jets having the same
vertical distance from the center jet has the same range, where the range is less disthe
further the jet is from the center.
EQUIPMENT: Mariottes's bottle is stored in the Fluid Mechanics cabinet. Dye
may be added to the water. A cinder block or wooden riser is used to raise the level
of the bottle.
SETUP NOTES: This demo will fail if there is a leak in the cap seal. Be sure that the cap has a gasket.