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Hydrostatic_force_on_plane_surfaces - Hydrostatic Forces on...

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Hydrostatic Forces on Plane Surfaces (Section 3-5, Ç engel and Cimbala) Liquid surface, open to air pressure P 0 ( P 0 is usually P atm ) However, the resultant pressure force acts not at C , but at CP, the center of pressure . The centroid C is the mathematical center of the plate’s area. We calculate the average pressure at the centroid. Because pressure increases as you go down in the liquid, the “pressure prism” is thicker towards th bottom, and therefore, the center of pressure CP is located below the centroid C . e
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