Question:
Aerofils are so designed that the speed of air:
Aerofils are so designed that the speed of air:
Updated On: Jul 27, 2022
- on top side is more than on lower side
- on lop side is less than on lower side
- is same on both sides
- is turbulent
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The Correct Option is A
Solution and Explanation
The aerofils are so designed that
$P_{\text {upper side }}< P_{\text {lower side }}$
so that the aerofils get a lifting force in upward direction.
According to Bernoulli's theorem, where the pressure is large, the velocity will be minimum or vice-versa.
Thus, $ v_{\text {upper side }} > v_{\text {lower side }}$
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Concepts Used:
Bernauli Theorem
In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738.
