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JEEMAIN and NEET
>>
Physics
>>
Class11
>>
Mechanical Properties of Solids
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Q)
In a test experiment on a model aeroplane in a wind tunnel,the flow speeds on the upper and lower surfaces of the wing are
70
m
s
−
1
respectively.What is the lift on the wing if its area is
2.5
m
2
?Take the density of air to be
1.3
K
g
m
−
3
(
A
)
1
×
10
3
N
(
B
)
1.45
×
10
3
N
(
C
)
1.51
×
10
3
N
(
D
)
2.1
×
10
4
N
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