Home
Class 11
PHYSICS
An extremely small and dense neutron sta...

An extremely small and dense neutron star of mass M and radius R is rotating with angular velocity `omega`. If an object is placed at its equator, then it will remain stuck to it due to gravity, if

A

`Mgt(Romega)/G`

B

`Mgt(R^2 omega^2)/G`

C

`Mgt(R^3 omega^2)/G`

D

`Mgt(R^2 omega^3)/G`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • FRICTION IS SOLIDS AND LIQUIDS

    TARGET PUBLICATION|Exercise MCQ (EVALUATION TEST)|21 Videos

  • LAWS OF MOTION

    TARGET PUBLICATION|Exercise EXERCISE|281 Videos

Similar Questions

Explore conceptually related problems

If a small body of mass m is moving with angular velocity omega in a circle of radiusr, then its K.E. will be

The angular velocity of rotation of star (of mass M and radius R ) at which the matter start to escape from its equator will be

A body of mass M is rotating about an axis with angular velocity omega . If k is radius of gyration of the body about the given axis, its angular momentum is

lf the earth of radius R, while rotating with angular velocity ro becomes stand still, what will be the effect on the weight of a body of mass rn at a latitude of 45°?

The moment of inertia of a ring about an axis passing through the centre and perpendicular to its plane 'I'. It is rotating with angular velocity 'omega'. Another identical ring is gently placed on it so that their centres coincide. If both the rings are rotating about the same axis then loss in kinetic energy is

A person stands in contact against a wall of cylindrical drum of radius 'r' rotating with angular velocity omega .If mu is coefficient of static fiction between the wall and the person , then the minium rotational speed which enables the person to remain stuck to the wall will be

A particle is moving along a circular path of radius 'r' with uniform angular velocity omega . Its angular acceleration is

A hollow sphere of mass 'M' and radius 'R' is rotating with angular frequency 'omega’. It suddenly stops rotating and 75% of kinetic energy is converted to heat. If 'S' is the specific heat of the material in J//kg K then rise in temperature of the sphere is (M.I. of hollow sphere = 2/3 MR^2 )

The angular velocity of rotation of a planet of mass M and radius R, at which the matter start to escape from its equator is

A thin circular ring of mass M is rotating about its axis with a constant angular velocity omega . Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring.Then the ring now rotates with an angular velocity

TARGET PUBLICATION-Gravitation-Exercise
  1. The ratio of binding energy of a satellite at rest on earth's surface ...

    Text Solution

    |

  2. If the mass of the Sun were ten times smaller and the universal gravit...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. A satellite is revolving in a circular orbit at a height 'h' above the...

    Text Solution

    |

  6. A body mass 'm' is dropped from height R/2, from earth's surface, wher...

    Text Solution

    |

  7. The mass density of a spherical galaxy varies as K/r over a large dist...

    Text Solution

    |

  8. Consider a spherical planet which is rotating about its axis such that...

    Text Solution

    |

  9. Kepler's third law states that square of period of revolution (T) of a...

    Text Solution

    |

  10. A planet of mass 'm' moves in an elliptical orbit around an unknown st...

    Text Solution

    |

  11. The ratio of accelerations due to gravity g1 : g2 on the surfaces of t...

    Text Solution

    |

  12. A body is thrown from the surface of the earth with velocity 'u' mis. ...

    Text Solution

    |

  13. A particle of mass M is situated at the centre of a spherical shell of...

    Text Solution

    |

  14. A light planet is revolving round a massive star with a period of revo...

    Text Solution

    |

  15. At what height from the surface of earth the gravitation potential and...

    Text Solution

    |

  16. A satellite of mass 'm' is revolving in circular orbit of radius 'r' r...

    Text Solution

    |

  17. The radii of a planet and its satellite are 2r and r and their densiti...

    Text Solution

    |

  18. The radius of the Earth is about 6400 km and that of Mars is about 320...

    Text Solution

    |

  19. Given radius of Earth 'R' and length of a day 'T' the height of a geos...

    Text Solution

    |

  20. The mass of planet Jupiter is 1.9xx10^(27)kg and that of the Sun is 1....

    Text Solution

    |