Question

1
1) 51.675 Pa
2) 21.275 Pa
3) 41.675 Pa
4) 31.275 Pa
23. Air streams horizontally across an aeroplane
wing of area 3m2 weighing 250 kg. The air
speed is 60 m/s and 45 m/s over the top surface
and under the bottom surface respectively
What is the lift on the wing ? (Density of air
1.293 g/l)
1) 3000 N
2) 3500N
3) 4000 N
4) 3054 N
24. The velocity of air over the upper surface of
the wing of an aeroplane is 40m/s and that on
the lower surfa
3
is​

Answer 1

the first answe is 51.89 and the sencind answer is false