Home
Class 12
PHYSICS
what is the escape velocity of a body fr...

what is the escape velocity of a body from the earth?

Text Solution

Verified by Experts

`V_(e_1)sqrt((2GM)/R),=sqrt((2G4M)/(2R))=sqrt((8GM)/R)thereforeV_(e_2)=sqrt2xxsqrt((2GM)/R)=sqrt2xxV_(e_1)=1.414xx11.2=15:8m//s`.
Promotional Banner

Topper's Solved these Questions

  • FRICTION

    MBD PUBLICATION|Exercise QUISTION BANK|72 Videos

  • KINETICS THEORY OF GASES

    MBD PUBLICATION|Exercise QUESTION BANK|264 Videos

Similar Questions

Explore conceptually related problems

An artificial satellite is moving in a circular orbit around the earth, with a speed which is equal to half the magnitude of the escape velocity from the earth. What is the height of the satellite above the- surface of earth

A body is dropped from a height of 100m. At what height the velocity of the body will be equal to one half of the velocity when it hits the ground ?

What is escape velocity? What is it’s value for a body to escape the earth.?

A body projected from the surface of the earth with thrice the escape velocity. What will be the velocity When it will escape the gravitational pull ?

MBD PUBLICATION-GRAVITATION-QUESTION BANK
  1. If an earth satellite is put in orbit at a height where resistance due...

    Text Solution

    |

  2. A cylindrical open water tank with a circular base is to be made out o...

    Text Solution

    |

  3. what is the escape velocity of a body from the earth?

    Text Solution

    |

  4. The gravitational field due to mass distribution is E=K/x^2 in the X d...

    Text Solution

    |

  5. Where the weight of a man is more ? at the surface of the earth or at ...

    Text Solution

    |

  6. What happens to the apparent weight of a body in upward direction

    Text Solution

    |

  7. what is greater? The attraction of earth for an apple or attraction of...

    Text Solution

    |

  8. The earth moving round the sun in a circular orbit is acted upon by a ...

    Text Solution

    |

  9. A wire of steel of radius r and length l breaks due to weight W .What ...

    Text Solution

    |

  10. Name the regions of the atmosphere where global warming and ozone depl...

    Text Solution

    |

  11. The gravitational force between two protons is attractive. Then the Co...

    Text Solution

    |

  12. Two equal balls having equal positive charges q coulombs are suspend...

    Text Solution

    |

  13. A person sitting in an artificial satellite revolving around the earth...

    Text Solution

    |

  14. Describe the various uses of geostationary satellite.

    Text Solution

    |

  15. Geostationary satellite appears unstable in space above a place in the...

    Text Solution

    |

  16. What is a satellite ? Obtain an expression for total energy of a satel...

    Text Solution

    |

  17. What is shape of the orbit of a planet ?

    Text Solution

    |

  18. Why a space rocket usually launched from west to east ? Why it is more...

    Text Solution

    |

  19. Can a satellite move in stable orbit, in a plane not passing through, ...

    Text Solution

    |

  20. A person sitting in a train moving with constant velocity along a stra...

    Text Solution

    |