Asmall jet airplane has a total wing area of 77.5 m2 and a mass of 7.23 104 kg. (a) if this jet is in horizontal flight, determine the pressure difference between the lower and upper surfaces of the wings.

To solve this problem we must simply resort to Newton's second law as well as the relationship between pressure and force as a physical unit applied in a given area.

In mathematical terms the Weight can be expressed as

Where,

m = mass

g = Gravitational Acceleration

We have the mass and the gravitational acceleration therefore the Weight is

Replacing we have

In this way the pressure exerted according to the active Area is,

Therefore the pressure difference between the lower and upper surface of the wings is 9.14kPa

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b would be the answer