Home
Class 11
PHYSICS
A point P lies on the axis of a ring of ...

A point P lies on the axis of a ring of mass M and radius a, at a distance a from its centre C. A small particle starts from P and reaches C under gravitational attraction only. Its speed at C will be

A

`sqrt((2GM)/(a))`

B

`sqrt((2GM)/(a)(1-(1)/(sqrt(2))))`

C

`sqrt((2GM)/(a)(sqrt(2)-1))`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • GRAVITATIONAL

    AAKASH SERIES|Exercise EXERCISE -3|154 Videos

  • GRAVITATIONAL

    AAKASH SERIES|Exercise EXERCISE -1B|46 Videos

  • GRAVITATION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II) PRACTICE SHEET (ADVANCED)Integer Type Questions |6 Videos

  • HORIZONTAL CIRCULAR MOTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET (ADVANCED) Integer Type Questions)|3 Videos

Similar Questions

Explore conceptually related problems

P is a point at a distance r from the centre of a spherical shell of mass M and radius a, where r lt a. The gravitational potential at P is

Four particles , each of mass M and equidistant from each other, move along a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is:

The radius of gyration of a body about an axis at a distance of 4cm from its centre of mass is 5cm . The radius of gyration about a parallel axis through centre of mass is

From a point P, the length of the tangent to a circle is 12 cm, and the distance of P from the centre is 13 cm. The radius of the circle is

AAKASH SERIES-GRAVITATIONAL-EXERCISE-2
  1. A satellite is revolving in a circular orbit of radius R. Ratio of KE ...

    Text Solution

    |

  2. The PE of a satellite is -U. Its KE is

    Text Solution

    |

  3. If the mass of the earth is M, its radius is R and gravitational const...

    Text Solution

    |

  4. A satellite is revolving in a circular orbit round the earth at a heig...

    Text Solution

    |

  5. The relation between the escape velocity and orbital velocity v(0) is ...

    Text Solution

    |

  6. The ratio of the time periods of two satellites at heights h(1), h(2) ...

    Text Solution

    |

  7. The KE required to project a body of mass 'm' from the earth's surface...

    Text Solution

    |

  8. A spaceship is launched into a circular orbit of radius R close to the...

    Text Solution

    |

  9. The escape velocity for a body projected vertically upwards from the s...

    Text Solution

    |

  10. The mass of a planet is half that of the earth and the radius of plane...

    Text Solution

    |

  11. The escape velcoties on the surface of two planets of masses m(1) and ...

    Text Solution

    |

  12. If the escape velocity on earth is 11.2kms^(-1) its value for a planet...

    Text Solution

    |

  13. The radius in kilometers to which the presence radius of the earth (R ...

    Text Solution

    |

  14. A planet revolving round the sun. Its distance from the sun at apogge ...

    Text Solution

    |

  15. Polar satellites go round the poles of earth in

    Text Solution

    |

  16. A point P lies on the axis of a ring of mass M and radius a, at a dist...

    Text Solution

    |

  17. At what height from the surface of earth the gravitational potential a...

    Text Solution

    |

  18. The ratio of escape velocity at earth to the escape velocity at a plan...

    Text Solution

    |

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

    Text Solution

    |

  20. The astronauts are floating ingravitational free space after having lo...

    Text Solution

    |