Question

2. A Boeing-737 airliner has a mass of 20 500 kg. The total area of the wings is 105 m2. What must be the pressure difference between the top and bottom of the wings to keep the airplane up? a. 1.99E+1 Pa b. 1.91E+3 Pa c. 1.95E+2 Pa d. 1.92E+3 Pa e. 1.81E+3 Pa
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Answer #1

For Q2, we use the concept of force balancing due to gravity and due to pressure difference.

For Q4 we use concept of pressure variation with depth to find pressure at bottom and multiply with area to get the force at bottom

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