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Questions  

The pressure on the top surface of an aeroplane wing is 0.7×103pa  and the pressure on the bottom surface is 0.75×103pa . If the area of each surface is 50m2.  The dynamic lift on the wing is

a
25×104N
b
0.5×104N
c
5×104N
d
0.25×104N

detailed solution

Correct option is D

F=A(p1−p2)=50(0.75×103−0.7×103)=0.25×104N

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