11A) The air speed over the t0p of a wing needs to be faster than the air speed under the wing This creates a pressure difference that lifts the airplane Most airplanes need a pressure difference of about 1000N/ m"2 to over come their weight. During take- off, the planes speed and; therefore, the airspeed under the wing is 60. Om/s How fast IS the air speed above the wing in order to lift the airplane? Air above tile wing must Ni: _'_~ - Wk\