Properties Of Matter

In a test experiment on a model aeroplane in wind tunnel, the flow speeds on the upper and lower surfaces of the wings are \(70 \mathrm{~ms}^{-1}\) and \(65 \mathrm{~ms}^{-1}\) respectively. If the wing area is \(2 \mathrm{~m}^2\), the lift of the wing is _________ \(N\).

(Given density of air \(=1.2 \mathrm{~kg} \mathrm{~m}^{-3}\))