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ρH2O=1 g/cm3 or 1000 kg/m3 |
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Specific Gravity Equation |
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P=ρgz: where z is the depth of the object under pressure |
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P=Po+ρgz: where Po is the pressure at the surface |
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Pgauge=(Po+ρgz)-Patm: where Po is the pressure at the surface and Patm is atmospheric pressure |
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Fb=ρwaterVobject submergedg |
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The buoyant force is equal to the weight of the fluid displaced
Weightfluid displaced= ρgV |
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For an in-compressible fluid, change in pressure will be distributed undiminished to every portion of the fluid and walls |
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Pressure in a Hydraulic System |
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Volume in a Hydraulic System |
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V1=V2
A1d1=A2d2: where d is the displacement |
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Work Done in a Hydraulic System |
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Definition
W=PV so
W=(F/A)(Ad)=Fd
W1=W2
F1d1=F2d2 |
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How far will an object sink in a fluid? |
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Definition
Weight of the fluid displaced (buoyant force) is less than the object's weight: Object will sink
Weight of the fluid displaced (buoyant force) is more than the object's weight: Object will float
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Attractive force between molecules of liquid |
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Attractive force between molecules of liquid and another substance |
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Fluids will flow quicker through small passages and slower through large passages
Q=v1A1=v2A2 |
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P1+ρv21+ρgh1=P2+ρv22+ρgh2 |
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