4 pt An Airbus A380-800 passanger airplane is cruising at constant altitude on a

Question

4 pt An Airbus A380-800 passanger airplane is cruising at constant altitude on a straight line with a constant speed. The total surface area of the two wings is 395 m2. The average speed of the air just below the wings is 266 m/s, and it is 296 m/s just above the surface of the wings. What is the mass of the airplane? The average density of the air around the airplane is pai 1.17 kg/m3. (in kg) BO 2.739 × 105 DO 5.759 x 105 FO 1.211 × 106 HO 2.546 × 106 17, AO 1.889 × 105 CO 3.971 × 105 EO 8.350 × 105 GO 1.756 × 106

Explanation / Answer

Here ,

let the mass of the airplane is m

as m * g = area * change in pressure

m * 9.8 = 395 * 0.50 * 1.17 * (296^2 - 266^2)

solving for m

m = 3.97 *10^5 Kg

the mass of airplane is 3.97 *10^5 Kg

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