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Force Multiplication

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The hydrostatic pressure exerted on a submerged surface in an enclosed container is directly proportional to the height of the fluid that the surface is submerged in. That being said, the pressure exerted by a certain volume of fluid can exceed the weight of the total volume of the fluid itself. [1]

For example, a long straw extending from the top of a fairly tall building and connects to a flask on the ground can be filled with 1 kilogram worth of water. If the surface of the water, filling the straw and flask, is high enough with respect to the bottom of the fluid filled system, the force of the pressure at the very bottom of the flask can be greater than that of the force of the weight of the water. [2]

In this example, that means the force the pressure exerts at the very bottom of the system could exceed 1 Nm (kg/ms^2).

References

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  1. Kumar, S. (2023). Hydrostatic Forces on Surface. In: Fluid Mechanics (Vol. 1). Springer, Cham. https://doi.org/10.1007/978-3-030-99762-5_3
    • This is a textbook that presents “fundamental concepts related to fluids mechanics contains illustrative diagrams for easy understanding offers well-designed objective-type questions and numerical problems.” This should be a reliable source.
  2. Longo, S., Tanda, M.G., Chiapponi, L. (2021). Hydrostatic Forces on Submerged Plane Surfaces. In: Problems in Hydraulics and Fluid Mechanics. Springer Tracts in Civil Engineering . Springer, Cham. https://doi.org/10.1007/978-3-030-51387-0_1
    • This is a textbook jointly written by Sandro Longo, a full professor of Hydraulics at the University of Parma, Italy, where he teaches Hydraulics and Environmental and Coastal Hydraulics and where he is also director of the Hydraulics Laboratory. This textbook “serves as an ideal complement to textbooks on hydraulics and fluid mechanics and will enable students to assess their own knowledge in preparation for exams and features more than 100 exercises with tips, answers and solutions. Its gradual, step-by-step approach makes it particularly well suited to self-learning.” That being said, this seems as a reliable source.