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Question

The weight of an aeroplane flying in the air is balanced by


A

Vertical component of the thrust created by air currents striking the lower surface of the wings

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B

Force due to reaction of gases ejected by the revolving propeller

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C

Upthrust of the air which will be equal to the weight of the air having the same volume as the plane

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D

Force due to the pressure difference between the upper and lower surfaces of the wings created by different air speeds on the surfaces

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Solution

The correct option is D

Force due to the pressure difference between the upper and lower surfaces of the wings created by different air speeds on the surfaces


Application of Bernoulli's theorem.


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