Homework Help: Physics

Posted by Jessica on Saturday, December 8, 2012 at 6:50pm.

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

Physics - Jennifer, Sunday, December 9, 2012 at 8:09pm
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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