A wind tunnel in a university's undergraduate fluid flow has a test section that is 2ft by 2ft in cross section and 4 ft in lenght. Its maximum speed is 230 ft/s. Some students wish to build a 1/16 scale modell of a tractor trailer rig (18 wheeler) to study how aerodynamic drag is affected by rounding off the back of the trailer. A full scale tractor rig is 52 ft long 8-22 ft wide and 12 ft high. Both air in the wind tunnel and the air flowing over the prototype are STP. What speed should the wind tunnel be run at too simulate the full scale tractor trailer rig traveling at 60 mph? Using tge wind tunnel tests, estimate the drag force (in lbf) on the full scale tractor trailer rig traveling at 60 mph?