Otherwise, it floats. The formal statement of Archimedes' Principle is this: the buoyant force acting on an object placed in a fluid is equal to the weight of the fluid displaced by the object. Suppose that the wood block in the example above has a volume of 1 cubic foot. A cubic foot of water weighs about 62.4 pounds.therwise, it floats. The formal statement of Archimedes' Principle is this: the buoyant force acting on an object placed in a fluid is equal to the weight of the fluid displaced by the object. Suppose that the wood block in the example above has a volume of 1 cubic foot. A cubic foot of water weighs about 62.4 pounds.
Freebase(0.00 / 0 votes)Rate this definition: Epicenter. The epicenter or epicentre is the point on the Earth's surface that is directly above the hypocenter or focus, the point where an earthquake or underground explosion originates.
â¢ Surface waves are produced when earthquake energy reaches the surface of Earth. 2 Features of Earthquakes â¢ Surface waves travel outward from the epicenter. â¢ The earthquake epicenter (EH pih sen tur) is the point on Earthâs surface directly above the earthquake focus.