A wind with speed $40\,m/s$ blows parallel to the roof of a house. The area of the roof is $250\,m^2.$ 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 $(\rho _{air} = 1.2\,kg/m^3)$
A wind with speed $40\,m/s$ blows parallel to the roof of a house. The area of the roof is $250\,m^2.$ 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 $(\rho _{air} = 1.2\,kg/m^3)$
- A
$4.8 \times 10^5\,N,$ upwards
- B
$2.4 \times 10^5\,N,$ upwards
- C
$2.4 \times 10^5\,N,$ downwards
- D
$4.8 \times 10^5\,N,$ downwards
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