Q16. State and prove Bernoulli principle. Also discuss the spinning of
ball in air.
(3
Answers
Answer:
According to Bernoulli's principle, faster moving air exerts less pressure, and therefore the air must exert an upward force on the ball. ... This gives a flow deflection of the airstream in one direction behind the ball. The rotating ball generates lift by exerting a downward force on the air as it flows past.
Answer:
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. To prove Bernoulli's theorem, consider a fluid of negligible viscosity moving with laminar flow.
Explanation:
In the case of a ball spinning through the air, the turning ball drags some of the air around with it. A spinning object moving through a fluid departs from its straight path because of pressure differences that develop in the fluid as a result of velocity changes induced by the spinning body.
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