A plane is in level flight at constant speed and each of its two wings has an area of 40m^2. If the speed of the air is 180 km/h over the lower wing surface and 252 km/h over the upper wing surface,…

Question

A plane is in level flight at constant speed and each of its two wings has an area of 40m^2. If the speed of the air is 180 km/h over the lower wing surface and 252 km/h over the upper wing surface, the mass of the plane is _____kg. (Take air density to be 1 kgm^-3 and g=10 ms^-2 )

Accepted Answer

Correct answer: 9600. (9600) A=80m^2 Using Bernonlli equation A(P_2-P_1)= 12 (V_1^2-V_2^2)A mg= 12 1(70^2-50^2) 80 mg=40 2400 m=9600 kg

$A plane is in level flight at constant speed and each of its two wings has an area of 40 m^{2} . If the speed of the air is 180 km / h over the lower wing surface and 252 km / h over the upper wing surface, the mass of the plane is _____kg. (Take air density to be 1 kg m^{- 3} and g = 10 ms^{- 2})$

Solution

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