(1). A cylinder (diameter D = 0.1m, length L = 1.0m) is immersed in an ideal fluid (viscosity = 0, density = 1,000 kg/m), which is flowing at a velocity of 3 m/s. Experiments have been carried out to measure the relative pressure coefficient Cp at various locations on the surface of the cylinder, as shown in Table 1. Use graphical or numerical integration to calculate the net pressure drag. Table 1 Pressure coefficient at various locations on the surface of the cylinder 0 (degree) 0 (degree) 0 1.00 105 -2.75 15 0.75 120 -2.00 30 0.00 135 -1.00 45 -1.00 150 0.00 60 -2.00 165 0.75 75 -2.75 180 1.00 90 -3.00 [Ans. The net drag is zero.]