﻿ Air is streaming past a horizontal aeroplane wing such that its speed is 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg/m3, find the difference in pressure between the top and bottom of the wing. If the wing is 10 m long and has an average width 2m, calculate the gross lift of the wing.  : Kaysons Education

# Air Is Streaming Past A Horizontal Aeroplane Wing Such That Its Speed Is 120 M/s Over The Upper Surface And 90 M/s At The Lower Surface. If The Density Of Air Is 1.3 Kg/m3, Find The Difference In Pressure Between The Top And Bottom Of The Wing. If The Wing Is 10 M Long And Has An Average Width 2m, Calculate The Gross Lift Of The Wing.

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## Question

### Solution

Correct option is

According to Bernoulli’s equation for a horizontal plane, i.e.,

PE = constant

.

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