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Archimedes Principle To Determine The Buoyant Force

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Experiment 10: Archimedes’ Principle
Kati Krishna
Shrobana Ghosh
5 November 2014
Scotlynn Farmer Focus The purpose of this experiment is to observe the buoyant force acting upon various cylinders, to calculate the density of these cylinders, and to measure the density of tap water. This experiment reinforces the understanding of Archimedes’ principle, which states that an object fully or partially submerged in a fluid is buoyed up by a force that is equal to the weight of the fluid displaced by the object. Fluids include liquid and gases. The buoyant force can be found with the density of the fluid displaced, the volume of fluid displaced, and the acceleration due to gravity. Three methods are used to find buoyant force in this experiment: direct measurement of mass, displacement method, and direct measurement of volume. The direct measurement of mass determines the mass of an object in air and then while submerged. The displacement method measures the volume of fluid displaced by the object to calculate the buoyant force. Finally, the direct measurement of volume determines the actual dimensions of an object which are used to calculate the volume. The volume of the object should equal the amount of fluid that would be displaced if the object was submerged in a fluid. In this experiment, the buoyant force and density …show more content…

These methods reinforced the understanding of the Archimedes’ principle. This principle describes the weight of an object in a fluid equal to the volume of fluid displaced by the object. These methods were effective in producing related values of buoyant force and density. The density of tap water was calculated using the metal cylinders and the vernier caliper. This value was compared to the actual density of water and produced a 1.8 %

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