Question

The total area of wings of an aeroplane is
10 m2. The speed of air above and below the wings
is 140 m/s and 110 m/s. Then the force on the
aeroplane by air is? (p = 1.28 kg/m²)
(1) 48750 N
(2) 48000 N
(3) 95000 N
(4) 50000 N​

Answer 1

Answer:

(2) 48000 N

Explanation:

Pressure =  

F/A

​  F = .5 *1.28 * (140^2-110^2) *10

= 48000