9.32A model airfoil of chord 6 in. and span 30 in. is placed in a wind tunnel with an air flow of 100 ft s at 70 F. It is mounted on a cylindrical support rod 1 in. in diameter and 10 in. tall. Instruments at the base of the rod indicate a vertical force of 10 lbf and a horizontal force of 1.5 lbf. Calculate the lift and drag coefficients of the airfoil.