With the plate partially submerged, the centers of pressure at separate (increasing) known weights were determined to be 195.0 mm, 191.3 mm, 189.0 mm, 181.3 mm, 178.3 mm, 173.0 mm, and 168.3 mm with corresponding vertical forces of 0.0773 N, 0.232 N, 0.374 N, 1.077 N, 1.451 N, 2.253 N, and 3.099 N respectively. In this lab, the center of pressure and the force on a vertical rectangular surface partially, and then fully, submerged in water at rest were determined with an Edibon Hydrostatics Pressure System and set of weights with known masses. Let us calculate the pressure exerted on the bottom by the weight of the fluid.Download Hydrostatic Pressure and Forces and more Hydrostatics Schemes and Mind Maps in PDF only on Docsity!P a g e | 1 Hydrostatics Lab: Hydrostatic Pressure and Forces John Felkins Abstract Hydrostatics offers physical explanations for many occurrences of everyday life, such as why atmospheric pressure changes with altitude, why wood and oil float on water, and why the surface of water is always flat and horizontal whatever the shape of its container. Its bottom supports the weight of the fluid in it. The difference is that water is much denser than air, about 775 times as dense.Ĭonsider the container in Figure 1. You may notice an air pressure change on an elevator ride that transports you many stories, but you need only dive a meter or so below the surface of a pool to feel a pressure increase. In this case, the pressure being exerted upon you is a result of both the weight of water above you and that of the atmosphere above you. Under water, the pressure exerted on you increases with increasing depth. This pressure is reduced as you climb up in altitude and the weight of air above you decreases. At the Earth’s surface, the air pressure exerted on you is a result of the weight of air above you. If your ears have ever popped on a plane flight or ached during a deep dive in a swimming pool, you have experienced the effect of depth on pressure in a fluid.
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