Suppose a flat roof has a surface area of 1.18000×102 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 9.93311×104 Pa. What is the force with which the air inside the house pushes the roof upward? What is the force with which the air outside the house pushes the roof downward? (again, calculate this value to 5 significant digits) The lift force takes into account the sum of these two forces. What is the lift force acting on the roof?