The speed of air flow on the upper and lower surfaces of a wing of an aeroplane are v 1 and v 2 respectively. If A is the cross section area of the wing and ρ is the density of air, then the upwar

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The speed of air flow on the upper and lower surfaces of a wing of an aeroplane are v 1 ​ and v 2 ​ respectively. If A is the cross section area of the wing and ρ is the density of air, then the upward life is

TestHub · Accepted Answer

E rotational ​ ​ = 2 1 ​ ​ ω 2 = 2 ∣ L 2 ​ ( ∵ L =∣ ω ) ​ Therefore, L 2 = 2 EI Hence L A 2 ​ = 2 E A ​ I A ​ ...(i) and L B 2 ​ = 2 E B ​ I B ​ ...(ii) From equation (i) and (ii) L B ​ L A ​ ​ L B ​ L A ​ ​ ( ∵ E A ​ E B ​ ​ ​ = 2 E B ​ I B ​ 2 E A ​ I A ​ ​ ​ = 4 100 ​ ​ = 5 = 100 and I B ​ I A ​ ​ = 4 ) ​

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