What is Bernoulli's principle?What is the use of it in daily life?

Athira

Hi! Athira,
 
In simple words, Bernoulli’s principle can be stated as "the pressure of a fluid decreases as the speed of the fluid increases."
There are many practical applications that are in use every day. For example, an air-plane relies on Bernoulli's principle to produce lift on its wings. The curve of the wing makes the air move faster, reducing its pressure.
It is based on the law of conservatin of energy.
 
Cheers!!

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 this theorem states that for the streamline flow of an ideal liquid, the total energy (the sum of the pressure energy, potential energy and kinetic energy) per unit mass remains constant at every cross-section throughout the flow.

the main use of this theorem is when height remain constant then the speed of fluid (liquid + gas) is inversely proportional to the pressure difference which causes many general happenings like

lift of an airplane it is caused because the speed of wind becomes more above the plane in comparison to its downward portion which results in the high pressure downward then upward and you must be knowing pressure difference is eliminated from high pressure to low pressure, so, the low pressure downward provides a lift to the airplane when the speed of air above the plane becomes sufficiently high.

it was a bookish example now try to think of why do a window of an air tight room gets opened when we strongly close the door of that room when no air can escape. this is also due to bernoulli's theorem

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