Fluids

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Fluids

• PMHS
• Pearson
• 2007

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Archimedes' Principle

• The buoyant force on a submerged object is equal
  to the weight of the fluid displaced.

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What Is Pressure?
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Static Fluid Pressure The pressure exerted by a
static fluid depends only upon the depth of the
fluid, the density of the fluid, and the
acceleration of gravity.
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Pascals Principle

• Pressure is transmitted undiminished in an
  enclosed static fluid.
• Any externally applied pressure is transmitted
  to all parts of the enclosed fluid, making
  possible a large multiplication of force
  (hydraulic press principle). The pressure at the
  bottom of the jug is equal to the externally
  applied pressure on the top of the fluid plus the
  static fluid pressure from the weight of the
  liquid.

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A multiplication of force can be achieved by the
application of fluid pressure according to
Pascal's principle, which for the two pistons
implies P1 P2 This allows the lifting of a
heavy load with a small force, as in an auto
hydraulic lift, but of course there can be no
multiplication of work, so in an ideal case with
no frictional loss Winput Woutput
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Do Fluids Contain Energy?
Kinetic Energy By Volume
Potential Energy By Volume
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Bernoulli Equation