A rule of physics which holds that the buoyant force of an object immersed in fluid is equal to the weight of the fluid displaced by the object. It is named after the Greekmathematician, physicist, and inventor Archimedes (c. 287-212 B.C. ), who first identified it.
A heavy substance that, by increasing the weight of an object experiencing buoyancy, improves its stability.
The tendency of an objectimmersed in a fluid to float. This can be explained by Archimedes's principle.
Mass divided by volume.
A measure of the weight of the fluid that has had to be moved out of position so that an object can be immersed. If a ship set down in the ocean causes 1,000 tons of water to be displaced, it is said to possess a displacement of 1,000 tons.
Any substance, whether gas or liquid, that conforms to the shape of itscontainer.
The product of mass multiplied by acceleration.
A measure of inertia, indicating the resistance of an object to a change in itsmotion. For an object immerse in fluid, mass is equal to volume multiplied by density.
The exertion of force over a two-dimensional area; hence the formula for pressure is force divided byarea. The British system of measures typically reckons pressure in pounds per square inch. In metric terms, this is measured in terms of newtons (N) per square meter, a figure known as a pascal (Pa.)
The density of an object or substance relative to the density of water; or more generally, the ratio between the densities of two objects or substances.
The amount of three-dimensional space occupied by an object. Volume is usually measured in cubic units.
A force equal to mass multiplied by the acceleration due to gravity (32ft/9.8 m/sec 2 ). For an object immersed influid, weight is the same as volume multiplied by density multiplied by gravitational acceleration.