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Assume that a plastic cup and very small block of wood
inside are just floating on the surface of water in a large jar.
The density of the plastic cup is greater than the density
of the water and the rim of the plastic cup is only one
"RCH" above the surface with the rest of the plastic cup
below the surface.
When a second small block of wood is added, its weight
is just large enough to sink the plastic cup.
Will the level of the water in the large jar rise, sink,
or remain the same after the cup sinks to the bottom of the jar?
Herb
(For those who are unfamiliar with the term "RCH", ask any of
your engineering friends for help!)