The Law of Floatation

Any floating object displaces its own weight of fluid.

— Archimedes of Syracuse

The Law of flotation is an application of archimedes' principle. For example, when a piece of wood of density more than water is placed on water, it sinks and displaces some water.As it sinks, more and more water is displaced.

This increases the buoyant force as the the buoyant force is equal to the weight of water displaced.The wood will sink until the buoyant force equal its weight.

Therefore,The law of flotation states that a floating object displaces its own weight of the fluid in which it floats

.i.e

.Weight of floating object= weight of fluid displaced

Mass of floating object = mass of fluid displaced

Any changes in the density of the surrouning liquid affects the level in which an object floats.