Question

During flight, the weight of the plane is balanced by

• A. Gravitational force
• B. Magnus effect
• C. High speed of plane
• D. Dynamic lift provided by wings

Answer 1

The correct option is D

Dynamic lift provided by wings

When the aerofoil moves against the wind, the orientation of the wing relative to flow direction causes the streamlines to crowd together above the wing more than those below it. The flow speed on top is higher than that below it. There is an upward force resulting in a dynamic lift of the wings and this balances the weight of the plane.