Water is pumped from a reservoir (water surface elevation = 111 m) and delivered to a higher elevation of 150.2 m as a free discharge through a 500 mm diameter pipe. the pump which is rated at 150 kw has a 70% efficiency. if the head loss in the pipe system is given by hl (m) = 46.42 q^2 (q in m^3/s). determine the discharge from the pump

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?