## The Famous Archimedes' Principle

**The Principle of Buoyancy**

If a body which is lighter than a fluid is placed in the fluid,
it will be immersed to such an extent that a volume of fluid which
is equal to the volume of the body immersed has the same weight
as the whole body.

For Example:

Place a 1'x 1'x 1' block of wood (with a density of 40 lbs./cu.ft.)
in a container of water.

The density of fresh water is 62.4 lbs/cu.ft.

The block of wood will sink down into the water by a depth (D)
such that the volume of water displaced by the wood equals the
total weight of the block of wood.

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