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Hydrostatic force on submerged surfaces |
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Introduction |
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| Designing of any hydraulic structure, which retains a significant amount of liquid, needs to calculate the total force caused by the retaining liquid on the surface of the structure. Other critical components of the force such as the direction and the line of action need to be addressed. In this module the resultant force acting on a submerged surface is derived. |
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| Hydrostatic force on a plane submerged surface | |||||||||
Shown in Fig.L-9.1 is a plane surface of arbitrary shape fully submerged in a uniform liquid. Since there can be no shear force in a static liquid, the hydrostatic force must act normal to the surface. Consider an element of area |
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Fig : L - 9.1: Hydrostatic force and center of pressure on an inclined surface |
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| Start | |||||||||
on the upper surface. The pressure force acting on the element is
