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Aeroplane
How a massive object like an aeroplane can fly?
What we will learn today?
Bernoulli`s Principle
What is Bernoulli`s Principle?
Bernoulli`s principle state that: When the speed of a fluid increases, the pressure of the fluid decreases.
When air is not blow into tube in the figure below, the level of water at X,Y and Z are same.
When air is blow into tube in the figure below, the level of water at X
First Group:
Second Group:
What is the DIFFERENT between BERNOULLI`S and ARCHIMEDES PRINCIPLE?
Bernoulli`s Principle
Archimedes Principle
-Bernoulli`s principle state that when the speed of a fluid increases , the pressure of the liquid decreases.
-Archimedes relate with the object is wholly or partically immersed in a fluid , buoyant force equal to the weight of the fluid displaced.
-Correlation between fluid speed and pressure in fluid
-Correlation between buoyant force and weight object that immersed.
The Application of Bernoulli`s Principle: (a)Dynamic lift of an aeroplane. -Figure below show a sequence of simulation of air flow over an aerofoil-shaped wing that results in a lifting force on the wing.
What are the other application Of Benoulli`s principle?
Hydrofoil. Bunsen burner.
Vacuum pump.
Insecticide spray.
Carburettor in car.
GOOD… All students Have giving a GREAT cooperation .
Ok, give a BIG clap to yourselves =)
Don`t forget to do revision at home and Study to overview the next topic, Chapter 4: Heat
Last but not least, please do exercise practice 3.6 pages 102 in text book.