Oil having a specific gravity of 0.763 and dynamic viscosity of 0.0864 Pa-s flows through a cast iron pipe at a velocity of 2 m/s. The pipe is 60 m long and 100 mm in diameter.(a) Find the head lost due to friction, and (b) Find the shearing stress in Pa at the walls of the pipe.

Oil having a specific gravity of 0.763 and dynamic viscosity of 0.0864 Pa-s flows through a cast iron pipe at a velocity of 2 m/s. The pipe is 60 m long and 100 mm in diameter.(a) Find the head lost due to friction, and (b) Find the shearing stress in Pa at the walls of the pipe.