1. The problem statement, all variables and given/known data 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. 2. Relevant equations W=mg 3. 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!