Home
Class 12
PHYSICS
An astronaut of mass m is working on a s...

An astronaut of mass m is working on a satellite orbitting the earth at a distance h from the earth's surface the radius fo the earth is R while its mass is M the gravitational pull `F_(G)` on the astronaut is

A

zero since astronaut feels weightless

B

`0ltF_(G)lt(GMm)/(R^(2))`

C

`(GMm)/((R+h)^(2))ltF_(G)lt(GMm)/(R^(2))`

D

`F_(0)=(GMm)/((R+h)^(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    ALLEN |Exercise Exercise 5 B (Previous Year Questions)|9 Videos

  • GRAVITATION

    ALLEN |Exercise Illustration|34 Videos

  • GRAVITATION

    ALLEN |Exercise Exercise 4 B (Brain Storming Subjective Exercise)|20 Videos

  • GEOMETRICAL OPTICS

    ALLEN |Exercise subjective|14 Videos

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos

Similar Questions

Explore conceptually related problems

What will be velocity of a satellite revolving around the earth at a height h above surface of earth if radius of earth is R :-

Two artificial satellites A and B are at a distance r_(A) and r_(B) above the earth's surface. If the radius of earth is R, then the ratio of their speed will be :-

A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth, where R is the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of the earth is …… hours.

Two identical satellite are at R and 7R away from earth surface, the wrong statement is ( R =radius of earth)

A geostationary satellite is orbiting the earth at a height of 5R above the surface of the earth, 2R being the radius of the earth. The time period of another satellite in hours at a height of 2R form the surface of the earth is

A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth.

A particle of mass m is thrown upwards from the surface of the earth, with a vilocity U. The mass and the radius of the earth are respectively, M and G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of U so that the particle does not return back to earth, is........

A satellite s is moving in an elliptical orbit ,paround the earth. The mass of the satellite is very small compared to the mass of the earth, Then,

As you have learnt in the text a geostationary satellite orbits the earth at a height of nearly 36,000 km from the surface of the earth. What is the potential due to earth's gravity at the site of this satellite ? (Take the potential energy at infinity to be zero). Mass of the earth 6.0xx 10^(24(kg) , Radius = 6400 km .

A satellite of earth of mass 'm' is taken from orbital radius 2R to 3R, then minimum work done is :-

ALLEN -GRAVITATION-Exercise 5 A (Previous Year Questions)
  1. The time period of an earth satellite in circular orbit is independent...

    Text Solution

    |

  2. Suppose the gravitational force varies inversely as the n^(th) power o...

    Text Solution

    |

  3. Suppose the gravitational force varies inversely as the n^(th) power o...

    Text Solution

    |

  4. Average density of the earth

    Text Solution

    |

  5. The change in the value of g at a height h above the surface of the ea...

    Text Solution

    |

  6. A particle of mass 10g is kept on the surface of a uniform sphere of m...

    Text Solution

    |

  7. If gE and gM are the acceleration due to gravity on the surfaces of th...

    Text Solution

    |

  8. A planet in a distant solar systyem is 10 times more massive than the ...

    Text Solution

    |

  9. This question contains Statement -1 and Stantement -2 Of the four choi...

    Text Solution

    |

  10. The height at which the acceleration due to gravity becomes g/9 in ter...

    Text Solution

    |

  11. Two bodies of masses m and 4m are placed at a distance r. The gravitat...

    Text Solution

    |

  12. Two particles of equal mass 'm' go around a circle of radius R under t...

    Text Solution

    |

  13. The mass of a spaceship is 1000kg. It is to be launched from the earth...

    Text Solution

    |

  14. Four particles, each of mass M and equidistant from each other, move a...

    Text Solution

    |

  15. From a solid sphere of mass M and radius R, a spherical portion of rad...

    Text Solution

    |

  16. A very long (length L) cylindrical galaxy is made of uniformly distrib...

    Text Solution

    |

  17. The correct variation of gravitational potential V with radius r measu...

    Text Solution

    |

  18. A satellite is revolving in a circular orbit at a height 'h' from the ...

    Text Solution

    |

  19. Figure elliptical path abcd of a planet around the sun S such that the...

    Text Solution

    |

  20. An astronaut of mass m is working on a satellite orbitting the earth a...

    Text Solution

    |