Question

An airplane has an effective wing surface area of 17 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 63.9 m/s, while the air speed beneath the wings is 58.0 m/s. What is the weight of the plane?

Answer in N
Weight = Lift
= Area*(PressureBottom - PressureTop)
= (1/2)(air density)*Area*(V2^1 - V1^2)

V2 = 63.9 m/s
V1 = 58 m/s

Look up the air density

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