Calculate the resultant force, FR kN at a pipe expansion if the force upstream in the direction of motion, F1, is 16.2 kN, the force downstream opposing motion, F2 is 75.1 kN, the density, ρ is 1000 kg/m3, the flowrate Q is 0.234 m3/s, the entrance velocity, V1 is 3.51 m/s and exit velocity, V2 is 1.08 m/s. Please give your answer to 3 significant figures.
