Air is steaming past a horizontal air plane wing such that its speed in 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg per meter 3 and the wing is 10 m long and has an average width of 2 m, then the difference of the pressure on the two sides of the wing of
Text Solution
Verified by ExpertsThe correct answer is:
A
From the Bernoulli's theorem
P 1 – P 2 = 
ρ ( 
– 
) = 
× 1.3 × [(120) 2 – (90) 2 ] = 4095 N / m 2 or Pascal
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