Kendall Widdel - Lab 7

Name: Kendall Widdel E-mail address: kwiddel@vols.utk.edu Laboratory 7 Report The goal of this experiment is to understand the relationship between pressure and density while using water and buoyancy to test this theory. Experiment W c W o W ow W cw W w F b (F b - W w )/F b Object 1 0.42 2.64 2.32 0.72 0.30 0.32 6.25% Object 2 0.42 3.42 3.07 0.71 0.29 0.35 17.14% Object 3 0.42 2.40 2.09 0.69 0.27 0.31 12.90% Object 4 0.42 0.88 0.57 0.71 0.29 0.31 6.45% m o m w V w ρ o material Object 1 0.27 0.03 0.00003 1000 aluminum Object 2 0.34 0.029 0.000029 1000 aluminu m Object 3 0.24 0.027 0.000027 1000 Aluminu m Object 4 0.09 0.029 0.000029 1000 aluminu m  Answer the following questions: According to Archimedes' principle, the buoyant force is equal to the weight of the displaced fluid. Do your experimental results verify Archimedes' principle? Comment on your results. According to Archimedes principle, this experiment does not verify Archimedes' principle because aluminum was the material for each object.

Do your experimentally determined densities of the various materials agree with the densities given in the table? Comment on your results. If the calculations are correct, then yes, the densities match up with aluminum for all the objects. Exploration  As the pressure sensor is moved deeper into the liquid, how does the pressure change? As the pressure sensor is moved deeper into the liquid, the pressure changes about 10kPa for every 1m  As liquid is added or removed from the basin, how does the pressure near the bottom of the tank change? The pressure near the bottom of the tank change as liquid is added, the pressure increases, and when liquid is removed, the pressure decreases  How does the pressure in the water change when the atmosphere is removed? The pressure of the water decreases around 101 kPa when the atmosphere is removed  Keeping all other conditions the same, does the pressure a given distance below the surface depend on the shape of the basin? The pressure a given distance below the surface does depend on the shape of the basic because different shapes do not have the same pressure  How is the density of the fluid related to the pressure it exerts?

This experiment was overall very interesting, this is one that I wish I would have been in person for, as I think it would be fun to conduct this experiment in person. I don’t think I did the calculations correctly for the experiment portion as I got aluminum for all 4 of the objects and that doesn’t seem correct. Also, in the exercise portion, I struggled explaining why these things were occurring, and in the book and paper exercise, I only knew the answer because I had done this experiment before, but besides that I don’t know how to answer the questions.