Suppose a flat roof has a surface area of 138000times102 m2, Ask an Expert

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Suppose a flat roof has a surface area of 1.38000×10² m². Presume the air inside the building (and under the roof) is at atmospheric pressure, 1.01325×105 Pa, and that the air racing across the top of the roof is at a pressure of 9.98819×10⁴ Pa.

a) What is the force with which the air inside the house pushes the roof upward? (please calculate this to 5 significant digits)

b) What is the force with which the air outside the house pushes the roof downward? (again, calculate this value to 5 significant digits)

c) The lift force takes into account the sum of these two forces. What is the lift force acting on the roof?

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Category:- Physics
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