Home
Class 12
PHYSICS
How much energy will be needed for a bod...

How much energy will be needed for a body of mass 100kg to escape from the earth- `(g = 10m//S^(2) and radius of earth = 6.4 xx 10^(6) m)`

A

`3.2xx10^9` joule

B

`6.4xx10^9` joule

C

`1.6xx10^9` joule

D

`8xx10^9` joule

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    TARGET PUBLICATION|Exercise EVALUATION TEST|24 Videos

  • GRAVITATION

    TARGET PUBLICATION|Exercise CRITICAL THINKING|78 Videos

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • INTERFERENCE AND DIFFRACTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos

Similar Questions

Explore conceptually related problems

How much energy will be necessary for making a body of 500 kg escape from the earth [g=9.8 ms^(2)," radius of earth "=6.4xx10^(6)m]

The energy required for a body of mass 1000 kg to escape from the attraction of the earth is (If radius of the earth is 6400 km and g=10m//s^(2) )

How much energy should be supplied to a body of mass 500kg, so that it can escape from the gravitational pull of the earth? [g=10 m//s^(2) and R=6400 km]

What is the force of gravity on a body of mass 150 kg lying on earth (Mass of earth =6 xx 10^(24) kg Radius of earth = 6 .4 xx 10^(6) m G= 6 .7 xx 10-11 Nm^2//kg^2)

If a spaceship orbits the earth at a height of 500 km from its surface, then determine its (i) kinetic energy, (ii) potential energy, and (iii) total energy (iv) binding energy. Mass of the satellite = 300 kg, Mass of the earth = 6xx10^(24) kg , radius of the earth = 6.4 xx 10^(6) m, G=6.67 xx 10^(-11) "N-m"^(2) kg^(-2) . Will your answer alter if the earth were to shrink suddenly to half its size ?

Calculate (i) kinetic energy (ii) potential energy and (iii) total energy of a satellite of mass 200 kg orbiting around the earth in an orbit of height 100 km from the surface of earth. Given, mass of earth = 10^(25) kg ,radius of earth = 6.4 xx 10^(6) m, G = 6.67 xx 10^(-11) Nm^(2) kg^(-2) .

What is the magnitude of the gravitational force between the Earth and a 1kg object on its surface ? (Mass of the earth is 6xx10^(24) kg and radius of the Earth is 6.4xx10^(6) m) .

A rocket is fired vertically upwards with a speed of upsilon (=5 km s^(-1)) from the surface of earth. It goes up to a height h before returning to earth. At height h a body is thrown from the rocket with speed upsilon_(0) in such away so that the body becomes a satellite of earth. Let the mass of the earth, M = 6 xx 10^(24) kg , mean radius of the earth, R = 6.4 xx 10^(6)m, G = 6.67 xx 10^(-11) Nm^(2) kg^(-2) , g = 9.8 ms^(-2) . Answer the following questions: Time period of revollution of satellite around the earth is

A rocket is fired vertically upwards with a speed of upsilon (=5 km s^(-1)) from the surface of earth. It goes up to a height h before returning to earth. At height h a body is thrown from the rocket with speed upsilon_(0) in such away so that the body becomes a satellite of earth. Let the mass of the earth, M = 6 xx 10^(24) kg , mean radius of the earth, R = 6.4 xx 10^(6)m, G = 6.67 xx 10^(-11) Nm^(2) kg^(-2) , g = 9.8 ms^(-2) . Answer the following questions: The value of h is

TARGET PUBLICATION-GRAVITATION-COMPETITIVE THINKING
  1. A satellite of mass m is orbiting the earth (of radius R) at a height ...

    Text Solution

    |

  2. If R is the radius of earth and g is acceleration due to gravity on th...

    Text Solution

    |

  3. How much energy will be needed for a body of mass 100kg to escape from...

    Text Solution

    |

  4. Considering earth's rotation, the value of g at the earth's surface is

    Text Solution

    |

  5. If earth were to rotate faster than its present speed, the weight of a...

    Text Solution

    |

  6. An extremely small and dense neutron star of mass M and radius R is ro...

    Text Solution

    |

  7. Which of the following statements is not correct for the decrease in t...

    Text Solution

    |

  8. The acceleration due to gravity is g at a point distant r from the cen...

    Text Solution

    |

  9. If the density of the earth is doubled keeping its radius constant the...

    Text Solution

    |

  10. The depth 'd' at which the value of acceleration due to gravity become...

    Text Solution

    |

  11. The value of gravitational accelerationg at a height h above the earth...

    Text Solution

    |

  12. The acceleration due to gravity at a height 1km above the earth is the...

    Text Solution

    |

  13. The acceleration due to gravity at a height 1km above the earth is the...

    Text Solution

    |

  14. (a) Assuming the earth to be a sphere of uniform density, calculate th...

    Text Solution

    |

  15. Calculate the value of acceleration due to gravity at a point a. 5.0 k...

    Text Solution

    |

  16. A body is taken to a height of nR from the surface of the earth . The ...

    Text Solution

    |

  17. The diameters of two planets are in the ratio 4 : 1 and their mean den...

    Text Solution

    |

  18. The ratio of acceleration due to gravity at a height 3 R above earth's...

    Text Solution

    |

  19. The dependence of acceleration due to gravity g on the distance r from...

    Text Solution

    |

  20. Starting from the centre of the earth having radius R, the variation o...

    Text Solution

    |