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A long 5cm-diameter steam pipe passes through some area open to the wind. Determine the drag force acting on the pipe per unit of its length when the air is at 1atm and 10C and the wind is blowing across the pipe at a speed of 50km/h. Take the density and kinematic viscosity of air at 1atm and 10C as =1.246kg/m3 and v=1.426105m2/s. The drag force acting on the pipe is N (per unit length). The figure for the average drag coefficient for cross-flow over a smooth circular cylinder and a smooth sphere is given below. The figure for the average drag coefficient for cross-flow over a smooth circular cylinder and a smooth sphere is given below