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Q.

The pressure on the top surface of an aeroplane wing is 0.5×103  Pa and the pressure on the bottom surface is 0.75×103  Pa. If the area of each surface is 25m2 , the dynamic lift on the wing is.

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a

25×104N

b

0.5×104N

c

5×104N

d

0.625×104N

answer is D.

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Detailed Solution

F=(P1−P2)A=(0.75×103−0.5×103)×25=0.625×104N
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