Problem Solving. Write your complete solution. Final Ally 1. An air flows through a pipe with a radius of 15.57 m and the force experienced at this point is 575.75 lb force. The velocity is 123.45 m/s and a density of 0.0031351 slug/ft^3. If the pipe becomes smaller the pressure experienced at this point is half the pressure experienced at the beginning. Calculate the velocity at the smaller point and its Mach number. Final answer should be in metric unit