# lab17 - LAB 17 Archimedes Principle Introduction Whenever a...

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LAB # 17 Archimedes Principle Introduction: Whenever a solid body is immersed in a fluid, it displaces a volume of fluid equal to its own volume. Since the displaced water was in equilibrium with the surrounding water before being displaced, an equal buoyant force will be exerted on any completely submerged solid of a given volume. The density, usually abbreviated as r, is defined as the ratio of the mass of a body to the volume of the body. Specific gravity is the ratio of the density of a body to the density of some other substance which may be used as a standard. Water, at room temperature, is generally chosen as this standard. If a solid body is submerged in a fluid, it will be acted upon by three forces: 1. The weight of the body W, which can be ex W = m b g = V b p b g pressed as: (1) where m b = mass of the body, V b = volume of the body, p b = density of the body and g = the acceleration due to gravity 2. The buoyant force B: which can be expressed; B= V b r f p f (2) (the subscript f refers to fluid)

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## This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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lab17 - LAB 17 Archimedes Principle Introduction Whenever a...

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