air of density 1.2 kg/m3 is blowing across the horizontal wings of an aeroplane in such a way that the speed above and below the wings are 150m/s and 100m/s respectively. the pressure of difference between the upper and lower sides of the wings??? plz answer to experts!
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The pressure of difference between both is 7500 pa
Using the relation,
Pabove + (ρair2) v² above = P below + (ρair2) v²below
The difference in the pressure results in an aerodynamic lift.
Thus,
The difference in pressure is the resultant force per unit area on the wing
Aerodynamic lift = Pbelow − Pabove
= (ρair2) v²above−(ρair2) v²below
= 1.2 [150² − 100²]
= 1.2 (150+100) (150−100)
= 1.2 × 250 × 50
= 7500
Thus, The pressure is 7500 Pa
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