In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^(-1) and 63 ms^(-1) respectively. What is the lift on the wing if its area is 2.5 m^(2)? Take the density of air to be 1.3 kg m^(-3)

In a test experiment on a model aeroplane in a wind tunnel, the flow s

1.	In a test experiment on a model aeroplane in a wind tunnel, the flow speeds on the upper and lower surfaces of the wing are 70 ms^(-1) and 63 ms^(-1) respectively. What is the lift on the wing if its area is 2.5 m^(2)? Take the density of air to be 1.3 kg m^(-3)
Answer» Solution :` P_2-P_1 = (1//2) rho ( v_1^(2) -v_2^(2) )=(1//2)XX 1.3 (70 ^(2) - 63 ^(2))= 0.65 xx 931 Pa ` FORCE on WING `= (P_2-P_1)A = 0.65 xx 931 xx 2.5 = 1512.9 N`