Lab 5_ Archimedes’ Principle

4. Create a Force Buoyancy vs. g graph in Excel. Fit a trendline to the graph. Title the graph. Include the equation and correlation coefficient for the line of best fit. Attach a screenshot of your graph here. A video for creating graphs is available for reference. https://youtu.be/558oDsFWfqs 5. Based on the equation from your graph, what is the value of the slope? What are the units for the slope? What quantity does it correspond to? (mass, volume, density). 6. Calculate the experimental density of gasoline in kg/m 3 . Compare it to the known (accepted) value from the table in part 2 by calculating the % error. Hint: The mass is the slope from the Force Buoyancy vs. g graph, and the 500 mL volume must be converted to m 3 . To convert the volume in mL to m 3 , multiply the volume in mL by 0.000001. ( 1 mL = . Show all your work. Part 2: Force Buoyancy vs. Fluid Density 1. Start your experiment on Earth with a volume of 600 mL, a mass of 2000 grams, and set the fluid to Gasoline. 2. Start the first trial and observe the force probe data. Record a reading for the force when it was in the air and the force when it was fully in the fluid. Determine the buoyant force. Repeat for each of the other fluids in the table below. Do not make changes to any other parameter. Fluid density (kg/m 3 ) Force in Air (N) Force in Fluid (N) Buoyant force (N) Gasoline 737 20 15 5 Maple Syrup 1333 20 12 8 Crude Oil 825 20 15 5 Fresh Water 1000 20 14 6 Mercury 13500 20 0 20 3. Write at least two interesting observations from your data. 1. The buoyant force varies with fluid density, with less dense fluids exerting higher buoyant forces. 2. Mercury shows a buoyant force equal to the force in air, despite exerting no force when objects are submerged in it, due to its extremely high density.