Question
Question: Applications of Bernoulli’s theorem can be seen in...
Applications of Bernoulli’s theorem can be seen in
A
Dynamic lift of aeroplane
B
Hydraulic press
C
Helicopter
D
None of these
Answer
Dynamic lift of aeroplane
Explanation
Solution
The shape of the aero plane wings is such that when it moves forward the air molecules at the top of the wings have a greater velocity (relative to the wings) compared to the air molecules at the bottom there force in accordance with Bernoulli’s principle the pressure at the top of the wings is less than that at the bottom. This results in a dynamic lift of the wings which balances the weight of the plane