Home
Class 11
PHYSICS
Air is streaming past a horizontal air p...

Air is streaming past a horizontal air plane wing such that its speed is `120 ms^-1` over the upper surface and `90 ms^-1` at the lower surface. If the density of air is `1.3 kg m^-3`m find the difference in pressure between the top and bottom of the wing. If the wing is `10 m` long and has an average width of `2 m`, calculate the gross lift of the wing.

Promotional Banner

Topper's Solved these Questions

  • FLUIDS AT REST

    SL ARORA|Exercise Problem for self practice|69 Videos

  • GRAVITATION

    SL ARORA|Exercise m|1 Videos

Similar Questions

Explore conceptually related problems

Air is streaming past a horizontal airplane wing such that its speed is 120 metre per sec over the upper surface and 90 metre per sec at the lowers surface. If the density of air is 1.3 kg per metre^(3) and the wing is 10 metre long and has an average width of 2 metre, then the difference of the pressure on the two sides of the wing is :

Air streams horizontally past an air plane. The speed over the top surface is 60 m/s, and that under the bottom surface is 45 m/s. The density of air is 1.293 kg/ m^(3) , then the difference in pressure

Air is streaming pasta horizontal airplane wing such that its speed is 90 m at the lower surface and 120 ms^(-1) over the upper surface. lithe wing is 10 m long and has an average width of 2 m , the difference of pressure on the two sides and the gross lift on the wing respectively, are (density of air =1.3kgm^(-3) )

The density of air is 1.293 kg m^3 . Express it in cgs units.

Given the density of air is 1.29 kg m^(-3) . Then, the relative density of air is ________.

Air stream flows horizontally past an aeroplane wing of surface area 4 m^(2) . The speed of air over the top surface is 60 ms^(-1) and under the bottom surface is 40 ms^(-1) The force of lift on the wing is (density of air = 1 kgm^(-3) )

At 10^5 Nm^(-2) atmospheric pressure the density of air is 1.29 kg m^(-3) .If gamma=1.41 for air, calculate the speed of sound in air.

Air of density 1.2kg m ^(-3) is blowing across the horizontal wings of an aeroplane in such a way that its speeds above and below the wings are 150 ms^(-1) and 100 ms ^(-1), respectively. The pressure difference between the upper and lower sides of the wings, is :

What is the mass of air in a room of dimensions 3mxx4mxx5m , when the density of air is 1.3 kg m^(-3) ?

SL ARORA-FLUIDS IN MOTION-All Questions
  1. An oil drop of radius 4xx10^(-4) mm falls freely in air whose coeffici...

    Text Solution

    |

  2. Water stands at a depth H in a tank whose side walls are vertical. A h...

    Text Solution

    |

  3. Air is streaming past a horizontal air plane wing such that its speed ...

    Text Solution

    |

  4. A horizontal pipeline carries water in a streamline flow. At a point a...

    Text Solution

    |

  5. A liquid is kept in a cylindrical vessel which is rotated along its ax...

    Text Solution

    |

  6. Calculate the rate of flow of glycerine of density. 1.25xx10^(3) kg//m...

    Text Solution

    |

  7. Water is flowing continuously from a tap having an internal diameter 8...

    Text Solution

    |

  8. A non-viscous liquid of constant density 1000kg//m^3 flows in a stream...

    Text Solution

    |

  9. Water from a tap emerges vertically downwards with an initial spped of...

    Text Solution

    |

  10. A cylinderical tank of height 0.4 m is open at the top and has a diame...

    Text Solution

    |

  11. A cylindrical tank 1 m in radius rests on a platform 5 m high. Initial...

    Text Solution

    |

  12. A metel plate 100 sq cm in area rests on a 2-mm layer of castor oil, w...

    Text Solution

    |

  13. A metal plate of area 5 cm ^(2) is placed on a 0.5 mm thick castor oil...

    Text Solution

    |

  14. A metal plate of area 0.02m^(2) is lying on a liquid layer of thickne...

    Text Solution

    |

  15. In an exeriment with poiseuille,s apparatus , the following observatio...

    Text Solution

    |

  16. Water at 20^(@) C is escaping from a cistern by ways of a horizontal c...

    Text Solution

    |

  17. Water is flowing througth a horizontal tube of length 0.25 m and radiu...

    Text Solution

    |

  18. Water is conveyed thourth a horizontal tube 8 cm in diameter and 4 kil...

    Text Solution

    |

  19. Calculate the mass of water flowing in 10 minutes throuth a tube 1 mm ...

    Text Solution

    |

  20. The difference of height between the two limbs of a manometer connecte...

    Text Solution

    |