Bernoulli’s Equation (Problem 21)

Every few years, winds in Boulder, Colorado, attain sustained speeds of 45.0 m/s (about 100 mi/h) when the jet stream descends during early spring. Approximately what is the force due to the Bernoulli effect on a roof having an area of $220{\text{m}}^2$? Typical air density in Boulder is $1.14{\text{kg/m}}^3$, and the corresponding atmospheric pressure is $8.89\times {10}^4{\text{N/m}}^2$. (Bernoulli’s principle as stated in the text assumes laminar flow. Using the principle here produces only an approximate result, because there is significant turbulence.)