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Bernoulli Principle
Bernoulli's Principle
2.6
Bernoulli's Principle
Bernoulli's principle
In a steady flow of a fluid, fluid pressure decreases as fluid velocity increases and vice versa.
Application of Bernoulli's principle
Insecticide sprayers
The piston is pushed in, high air velocity on nozzle
The air pressure in the nozzle is lower than atmospheric pressure
Atmospheric pressure acts on the surface of the insecticide
Insecticide moves up through the tube
Bunsen burner
Gas flowing at high velocity, resulting in a lower pressure inside than atmospheric pressure
Air from outside is drawn in, mixed with gas
Gas and air mixture enables the burning of gas
Plane wing (aerofoil)
Air moves at higher velocity over the wing, resulting in lower pressure
Air moves slower under the wings, resulting in a higher pressure
Pressure below wing is higher than the pressure at the top
Resultant force acting upwards (lift)
Car spoiler ( inverted aerofoil)
Air moves at lower velocity over the wing, resulting in higher pressure
Air moves faster under the wings, resulting in a lower pressure
Pressure below wing is lower than the pressure at the top
Resultant force acting downwards
Bernoulli's Principle
2.6
Bernoulli's Principle
Bernoulli's principle
In a steady flow of a fluid, fluid pressure decreases as fluid velocity increases and vice versa.
Application of Bernoulli's principle
Insecticide sprayers
The piston is pushed in, high air velocity on nozzle
The air pressure in the nozzle is lower than atmospheric pressure
Atmospheric pressure acts on the surface of the insecticide
Insecticide moves up through the tube
Bunsen burner
Gas flowing at high velocity, resulting in a lower pressure inside than atmospheric pressure
Air from outside is drawn in, mixed with gas
Gas and air mixture enables the burning of gas
Plane wing (aerofoil)
Air moves at higher velocity over the wing, resulting in lower pressure
Air moves slower under the wings, resulting in a higher pressure
Pressure below wing is higher than the pressure at the top
Resultant force acting upwards (lift)
Car spoiler ( inverted aerofoil)
Air moves at lower velocity over the wing, resulting in higher pressure
Air moves faster under the wings, resulting in a lower pressure
Pressure below wing is lower than the pressure at the top
Resultant force acting downwards
Chapter : Pressure
Topic : Bernoulli Principle
Form 5
Physics
View all notes for Physics Form 5
Related notes
Liquid Pressure
Atmospheric Pressure
Gas Pressure
Pascal's Principle
Archimedes' Principle
Resultant force
Resolution of Forces
Forces in Equilibrium
Elasticity
Current and Potential Difference
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