A long 5-cm-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 1 atm and 10C and the wind is blowing across the pipe at a speed of 50km/h. Take the density and knematic 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