Physics110 Lab on Buoyancy Write-Up

Physics110 Lab on Buoyancy Write-Up - sometimes. Error...

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Experiment XI: Buoyancy George Fountain III Lab Partner: Swati Samtani Instructor: David Friedlander-Holm December 2, 2010 Physics 110: Section 002
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Abstract: A force sensor was used to calculate the buoyancy of objects in a liquid and in the air, from measuring the densities and specific gravitational forces. In this experiment we calculated the buoyancy force of steel, aluminum, and brass submerged in water and three different balloons in the air. Using DataStudio, the force of each object was calculated and each object was weighed separately. Possible sources of error include wind resistance, constant changes in digits shown in DataStudio’s calculations, and the ruler because jack increased at an angle
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Unformatted text preview: sometimes. Error Analysis Discussion: 1. When released in an incompressible fluid in a uniform gravitational field, the balloon that is free to expand will rise higher. As it rises, the pressure outside reduces, so the balloon can expand. Therefore, the buoyant force (equal to the amount of air displaced) is greater than on the balloon that cannot expand, since is it a greater force against the balloon. 2. Knowing the density of the object, once can find the density of the fluid in which it is submersed by determining the volume of the fluid before and after the object has been put in and removed from the fluid (difference between the two values). 3. Fb = (2/5) m l/p...
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Physics110 Lab on Buoyancy Write-Up - sometimes. Error...

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