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Mowgli
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Homework Statement
Air (density= 1.29 kg/m^3) passes over the top surface of an aircraft whoe effective wing surface area is 75.5 m^2 at a speed of 255 m/s. If the air speed beneath the wings is 135 /s, what is the weight of the plane.
Homework Equations
W=mg
The Attempt at a Solution
I know how to find the "lift" in Newtons due to Bernoulli's effect- but I am thrown off by this question. What is the weight? Please help!