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Forces on a Partially Submerged Gate

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Contributed by: Rachael L. Baumann (November 2017)
Additional contributions by: John L. Falconer
(University of Colorado Boulder, Department of Chemical and Biological Engineering)
Open content licensed under CC BY-NC-SA

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Details

The resultant force can be written as:

A moment balance determines the tension in the cable that is holding up the gate:

Rearranging to solve for tension:

Figure 1

Figure 2

Reference

[1] B. R. Munson, T. H. Okiishi and W. W. Huebsch, Fundamentals of Fluid Mechanics, 6th ed., Hoboken, NJ: John Wiley & Sons, 2009 pp. 57–60.

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