The velocity of air over the upper surface of the wing of an aeroplane is 40m/s and that on the lower surface is 30m/s. If the area of the wing is 5m^(2) and the mass of the wing is 300kg, the net force acting on the wing is (Density of air = 1.3kg//m^(3) and g=10m//s^(2))

The velocity of air over the upper surface of the wing of an aeroplane

1.	The velocity of air over the upper surface of the wing of an aeroplane is 40m/s and that on the lower surface is 30m/s. If the area of the wing is 5m^(2) and the mass of the wing is 300kg, the net force acting on the wing is (Density of air = 1.3kg//m^(3) and g=10m//s^(2))
Answer» 725N UPWARD 725N downward 2275 N upward 2275 N downward Answer :B