Chapter 11  "Fluids"
Density
ρ
= m/V
ρ
= density, m = mass, v = volume
Pressure
P = F/A
P = Pressure, F = Force, A = Area
1.013 x 10
5
Pa = 1 atmosphere = 14.70 lb/in
2
P
2
= P
1
+
ρ
gh
Pascal’s Principle
Any change in the pressure applied to a completely enclosed
fluid is transmitted to all parts of the fluid and the enclosing walls.
Archimedes’ Principle
Any fluid applies a buoyant force to an object that is partially
or completely immersed in it; the magnitude of the buoyant force
equals the weight of the fluid that the object displaces:
F
B
= W
fluid
The Equation of Continuity
The mass flow rate (
ρ
Av) has the same value at
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 Spring '08
 Sharp
 Fluid Dynamics, Fluid Mechanics, Buoyancy, Force, Mass, completely enclosed fluid

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