Home
Class 12
PHYSICS
The work done to remove a body of mass 1...

The work done to remove a body of mass 10 kg from the surface of the earth of radius 'R' and 'g' acceleration due to gravity to value 6400 km and `10m//s^(2)` respectively to infinity is

A

`1.28J`

B

`6.4xx10^(8)J`

C

`1.28xx10^(8)J`

D

`3.2xx10^(8)J`

Text Solution

Verified by Experts

The correct Answer is:
b
`"P E "=("GMm")/(R)=(gR^(2)m)/(R)`
= mgR
`=10xx10xx6.4xx10^(6)=6.4xx10^(8)J.`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|458 Videos

  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos

Similar Questions

Explore conceptually related problems

The work done to remove a body of mass 2kg from the surface of the earth of radius 'R' and 'g' acceleration due to gravity of values 6400 km and 10m//s^(2) respectively to infinity is

The binding energy of an object of mass m placed on the surface of the earth r is (R = radius of earth, g = acceleration due to gravity)

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) )

At what height from the surface of earth, the acceleration due to gravity decreases by 2% ? [Radius of earth = 6,400 km.]

Calculate the work required to raise a body of mass m to a height h just above the earth's surface. Radius of the earth is R and acceleration due to gravity at the earth's surface is g.

Calculate the acceleration due to gravity at a height of 1600 km from the surface of the Earth. (Given acceleration due to gravity on the surface of the Earth g_(0) = 9.8 ms^(-2) and radius of earth, R = 6400 km).

The depth from the surface of the earth where acceleration due to gravity is 20% of its value on the surface of the earth is (R = 6400 km)

If R is the radius of the earth and g the acceleration due to gravity on the earth’s surface, the mean density of the earth is

Given that the radius of the Earth and acceleration due to gravity on the surface of the Earth as 6400 km and 9.8 ms^(-2) , respectively, find the acceleration due to gravity at a height of 5 km from the surface of the Earth.

The earth is a solid sphere of radius 6400 km, the value of acceleration due to gravity at a height 800 km above the surface of the earth is

NIKITA PUBLICATION-GRAVITATION-Multiple Choice Questions
  1. The kinetic energy needed to project a body of mass m from the surface...

    Text Solution

    |

  2. The ratio of the K.E. required to the given to the satellite to escape...

    Text Solution

    |

  3. The work done to remove a body of mass 10 kg from the surface of the e...

    Text Solution

    |

  4. The energy spent in sending a body of mass 1 kg surface of the earth i...

    Text Solution

    |

  5. The escape velocity of a body projected vertically upwards from the su...

    Text Solution

    |

  6. The escape velocity of an object projected from the surface of a given...

    Text Solution

    |

  7. Escape velocity from the moon surface is less than that on the earth s...

    Text Solution

    |

  8. There is no atomosphere on moon because

    Text Solution

    |

  9. The angular velocity of rotation of star (of mass M and radius R ) at ...

    Text Solution

    |

  10. A space ship is fired from the earth's surface with an intial speed of...

    Text Solution

    |

  11. Escape velocity of a body from the surface of earth is 11.2km/sec. fro...

    Text Solution

    |

  12. The acceleration due to gravity on the surface of the moon is one-sixt...

    Text Solution

    |

  13. The velocity with which a body should be projected from the surface of...

    Text Solution

    |

  14. The masses and radii of the earth an moon are M(1) and R(1) and M(2), ...

    Text Solution

    |

  15. The escape velocity of the earth is 11.2 km/s. For a planet whose mass...

    Text Solution

    |

  16. A satellite orbiting close to earth surface will escape, if

    Text Solution

    |

  17. The escape velocity corresponding to a planet of mass M and radius R i...

    Text Solution

    |

  18. The escape Velocity from the earth is 11.2 Km//s. The escape Velocity ...

    Text Solution

    |

  19. If the acceleration due to gravity at the surface of the earth is g, t...

    Text Solution

    |

  20. A projectile is fired from the surface of earth of radius R with a vel...

    Text Solution

    |