A 15-mph wind flows over a Quonset hut having a radius of \(12 \mathrm{ft}\) and a length of \(60 \mathrm{ft}\), as shown in Fig. P6.57. The upstream pressure and temperature are equal to those inside the Quonset hut: \(14.696 \mathrm{psia}\) and \(70{ }^{\circ} \mathrm{F}\). Estimate the upward force on the Quonset hut. Find the location \(\theta\) on the roof of the Quonset hut where the pressure is \(p_{\infty}\).

Figure P6.57

V Par T Par T 12 ff