Repeat Problem 9.1 if the object is a cone (made by rotating the equilateral triangle about the horizontal axis through its tip) rather than a triangular bar.

Problem 9.1

Assume that water flowing past the equilateral triangular bar shown in Fig. P9.1 produces the pressure distributions indicated. Determine the lift and drag on the bar and the corresponding lift and drag coefficients (based on frontal area). Neglect shear forces.

Figure P9.1

U = 5 ft/s p=0.5 pu p=-0.25 pu Linear distribution b = length = 4 ft 0.1 ft