Mechanical Properties of Fluids Flashcards
What is Gauge Pressure?
It is the pressure measured relative to the atmospheric pressure.
What is the absolute pressure of an object?
The total pressure acting on an object in fluid is the absolute pressure. It is the sum of the atmospheric pressure and the gauge pressure
State Pascal’s law
The pressure applied to an enclosed fluid is transmitted evenly to every point in the fluid and the walls of the container, if they are at the same height.
State the law of floatation
A body floats in a fluid if the weight of the body is equal to the weight of the fluid displaced by the immersed part of the body.
State Archimedes’ principle
The buoyant force on an object is equal to the weight of the fluid displaced by the object.
State Bernoulli’s Principle
Within a horizontal flow of fluid, the point of higher fluid speed will have less pressure than the points of lower fluid speed.
Bernoulli’s principle
P1 + 1/2pV1 + pgh1 = P2 + 1/2pV2 + pgh2
