Pressure
Buoyancy, Archimedes' principle
Any object, wholly or partially immersed in a fluid, is buoyed
up by a force equal to the weight of the fluid displaced by the object
For a sunken object the volume of displaced fluid is the volume of
the object, and for a floating object on a liquid, the weight
of the displaced liquid is the weight of the object
apparent immersed weight = weight – weight of displaced fluid
density of object / density of fluid = weight /
weight of displaced fluid
density of object / density of fluid = weight /
(weight – apparent immersed weight)
Pascal's law or the Principle of transmission of
fluid-pressure states that "pressure exerted anywhere in a
confined incompressible fluid is transmitted equally in all
directions throughout the fluid such that the pressure ratio
(initial difference) remains the same.
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