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QAIPM-2015-Ph-1359: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1359 Solution: A wind with speed 40 m/s blows parallel to the roof of a house. …

A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2250\ \text{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 (ρair=1.2 kg/m3\rho_{air} = 1.2\ \text{kg/m}^3) 2.4×105 N2.4 \times 10^5\ \text{N} upwards 2.4×105 N2.4 \times 10^5\ \text{N} downwards 4.8×105 N4.8 \times 10^5\ \text{N} downwards 4.8×105 N4.8 \times 10^5\ \text{N} upwards

Multiple Choice Options

  • A 2.4 ×\times _ 10 5 N, upwards
  • B 2.4 ×\times _ 10 5 N, downwards
  • C 4.8 ×\times _ 10 5 N, downwards
  • D 4.8 ×\times _ 10 5 N, upwards

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