- #1

mikefitz

- 155

- 0

*An airplane flies on a level path. There is a pressure difference of 525 Pa between the lower and upper surfaces of the wings. The area of each wing surface is about 128 m2. The air moves below the wings at a speed of 81.5 m/s. Estimate (a) the weight of the plane and (b) the air speed above the wings.*

Fup = PA

Fdown=mg

F=525*128=67200 N

67200 = m(9.81); m=6850.153kb

It weighs 67200 Newtons doesn't it?

also, I am unsure how to begin part b - any ideas? Thanks