Water flows in a horizontal pipe with entrance velocity 2.5m/s is turning 90 degrees and leaves the pipe. Pipe diameter is d1=15cm at the entrance, then gradually decresases to d2=7.5cm. Absolute Pressure is known at both inlet and outlet , P1=168,600 Pa, P2=121,700 Pa. Calculate the force on the flange that mounts the horizontal section of the pipe.