14.2 The axial-flow pump in the figure has an impeller that is rotating at 1400rpm. The mean radius is 50 mm. If the pump produces a flow of 1260 gpm, and there is an ideal most efficient performance axial pump, determine the shaft power in hp. The average cross-sectional area of the open region within the impeller is 0.04 m and the angle between the relative velocity and the positive U is 60 at blade exit. 2 MS 3