Transcription of PRESSURE AND FLUID STATICS T
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PRESSURE AND FLUID STATICS T
PRESSURE AND FLUID STATICSThis chapter deals with forces applied by fluids at rest or in rigid-bodymotion. The FLUID property responsible for those forces is PRESSURE ,which is a normal force exerted by a FLUID per unit area. We start thischapter with a detailed discussion of PRESSURE , including absoluteand gagepressures, the PRESSURE at a point, the variation of PRESSURE with depthin agravitational field, the manometer, the barometer, and PRESSURE measure-ment devices. This is followed by a discussion of the hydrostatic forcesapplied on submerged bodies with plane or curved surfaces.
fluid rto be constant, a force balance in the vertical z-direction gives (3–6) where W mg rg x z is the weight of the fluid element. Dividing by x and rearranging gives (3–7) where gs rg is the specific weightof the fluid. Thus, we conclude that the pressure difference between two points in a constant density fluid is propor-
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