NEET 2015 Physics Bernoulli's Principle MCQ Question
A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m². Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be (ρ_air = 1.2 kg/m³)
4.8 x 10⁵ N, downwards
4.8 x 10⁵ N, upwards
2.4 x 10⁵ N, upwards
2.4 x 10⁵ N, downwards
Correct Answer
Detailed Explanation
The force is calculated using Bernoulli's principle, which relates the pressure difference to the wind speed. The pressure difference causes an upward force on the roof.
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