Explain Aerofoil or lift in aircraft wing .

Explanation

In figure an aerofoil is shown , which is a solid piece shaped to provide an upward dynamic lift when it moves horizontally through air .
The cross section on the wings of an aeroplane looks somewhat like the aerofoil (shown in figure ) with streamlines around it.
When the aerofoil moves against the wind, the orientatin of the wing relative to flow direction causes the streamlines to crowd together above the wing more then those below it . The flow speed on top is higher than that below it .
This balances the weight of the plane.