A 40-mph wind below past your house speeds up as it flows up and over the roof. If the elevation effects are negligible, determine: 6 marks a) The pressure at the point on the roof where the speed is 60 rpm if the pressure in the free stream blowing toward your house is 14.7 psia. Would this effect tend to push the roof down against the house, or would it tend to lift the roof?
3 marks b) The pressure on a window facing the wind if the window is assuming to be a stagnation point.