
To Calculate: The lift (in newtons) due to Bernoulli’s principle on the wing.

Answer to Problem 44P
Explanation of Solution
Given info:
Area,
The speeds at the top and bottom surfaces are
Formula used:
Bernoulli’s equation is,
The force on the roof is,
Calculation:
The lift force must be equal to the pressure difference between the wing’s surfaces, multiply by the wing’s surface area. Now, assume the two surfaces of the wings to be at the equal height, where subscript 1 represents the bottom surface and subscript 2 represents the top surface. The Bernoulli’s equation becomes for the equal height is given as,
Now substitute the value in this equation,
Now the net force is,
Conclusion:
The force is
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