The velocity of the wind over the surface of the wing of an aeroplane is `80ms^(-1)` and under the wing `60ms^(-1)`. If the area of the wing is `4m^(2)`, the dynamic lift experienced by the wing is [density of air `=1.3kg.m^(-3)`]

In a test experiment on a model aeroplane in wind tunnel,the flow speeds on the upper and lower surfaces of the wings are 70ms^(-1) and 65ms^(-1) respectively.If the wing area is .2m^(2) , the lift of the wing is__________N (Given density of air =1.2kgm^(-3) )

When a plane is taking off on a runway the wind velocities at the top and bottom of the wings are found to be 40 ms^(-1) and 30 ms^(-1) respectively. If the wing span is 60 m^(2) find the dynamics lift on the density of air is 1.27 kg m^(-3) .

The pressure on the top surface of an aeroplane wing is 0.8xx 10^5 Pa and the pressure on the bottom surface is 0.75 xx 10^5 Pa. If the area of each surface is 50 m^2 , the dynamic lift on the wing is

The pressure on the top surface of an aeroplane wing is 0.8xx 10^5 Pa and the pressure on the bottom surface is 0.75 xx 10^5 Pa. If the area of each surface is 50 m^2 , the dynamic lift on the wing is