Purpose In this lab, we will prove Archimedes’ Principle by finding the density of a Metal Cylinder, a cork, and an unknown fluid by using Archimedes’ Principle. We will also use the PASCO Pascal’s Principle Lab Setup to investigate the use of fluid pressure as a hydraulic system to do work and we will find its mechanical advantage.
Procedure For the first part of the lab we will be verifying case 3 as explained by professor. We will measure the mass of the metal cylinder using the digital balance. After measuring the mass we also gather the diameter and height using the vernier caliper to calculate its volume. Using the mass and volume, we calculated its density.
Now a beaker was filled with water and the mass was measured. The cylinder we originally used will now be suspended in the beaker full of water and the change of mass will be recorded. The difference between these gives the Buoyant Mass of the cylinder. Using formulas provided the actual density of object was calculated as well as the apparent mass in water. Next we verified the situation in case 1. The big and small diameters of the cork were measured and then the density was calculated. Same process again, the cork will be suspended in the beaker that was full of water and we measured of how of it went in the water. The percent error was calculated between the experimental and the actual densities. Next we found the density off an alcohol solution two different ways and compared them. First we found the mass of the graduated cylinder and then we placed about 30ml of alcohol inside. The mass was measured again and the two masses were subtracted to obtain the mass of the alcohol alone. The mass of the alcohol and the volume were divided to find its density. The cylinder was now suspended on the alcohol and the change in mass was recorded. Now the density of alcohol was calculated using the recorded data. For part 2 we had the