Micro Teach` Huda

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Are You Ready To Learn Today?

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.

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