In a wind tunnel experiment the pressure on the upper and lower surfaces of the wings are 0.90`xx 10^(5)` Pa and 0.91 `xx10^(5)`Pa respectively .If the area of the wings is `40 m^(2)` the net liftng forcw on the wing isA. `2xx 10^(4)`NB. `4xx 10^(4)`NC. `6 xx 10^(4)`ND. `8 xx 10^(4)`N

In a wind tunnel experiment the pressure on the upper and lower surfac

1.	In a wind tunnel experiment the pressure on the upper and lower surfaces of the wings are 0.90`xx 10^(5)` Pa and 0.91 `xx10^(5)`Pa respectively .If the area of the wings is `40 m^(2)` the net liftng forcw on the wing isA. `2xx 10^(4)`NB. `4xx 10^(4)`NC. `6 xx 10^(4)`ND. `8 xx 10^(4)`N
Answer» Correct Answer - B Pressure differnce which provides the lift =Pressure difference `xx` Area of the wing `=(P_(2)xxP_(1))xxA=(0.91xx10^(5)-0.90xx10^(5))Paxx40 m^(2)` `=0.01xx10^(5) Pa xx 40 m^(2)=4xx10^(4) N`

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In a wind tunnel experiment the pressure on the upper and lower surfaces of the wings are 0.90`xx 10^(5)` Pa and 0.91 `xx10^(5)`Pa respectively .If the area of the wings is `40 m^(2)` the net liftng forcw on the wing isA. `2xx 10^(4)`NB. `4xx 10^(4)`NC. `6 xx 10^(4)`ND. `8 xx 10^(4)`N

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