Home
Class 12
PHYSICS
A thin ring and a solid disc of same mas...

A thin ring and a solid disc of same mass and radius are rolling with the same linear velocity. Then ratio of their kinetic energies is

A

`4 : 3`

B

`3 : 4`

C

`2 : 3`

D

`3 : 2`

Text Solution

Verified by Experts

The correct Answer is:
A
`(KE_(1))/(KE_(2))=((1)/(2)mv^(2)(1+1))/((1)/(2)mv^(2)((3)/(2)))`
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER - MH-CET 2018

    NIKITA PUBLICATION|Exercise MCQ|50 Videos

  • SEMICONDUCTORS

    NIKITA PUBLICATION|Exercise MCQS|350 Videos

Similar Questions

Explore conceptually related problems

A ring and a solid sphere of same mass and radius are rotating with the same angular velocity about their diameteric axes then :-

A loop and a disc have same mass and roll without slipping with the same linear velocity v . If the total kinetic energy of the loop is 8 J , the kinetic energy of the disc must be.

Two bodies of masses m_1 and m_2 have the same linear momentum. What is the ratio of their kinetic energies?

A ring and a disc having the same mass, roll without slipping with the same linear velocity. If the kinetic energy of the ring is 8 j , Find the kinetic energy of disc (in J)

A solid sphere and a solid cylinder having the same mass and radius, rolls down the same incline. The ratio of their acceleration will be

A solid cylinder and a sphere, having the same mass, rolls without slipping with the same linear velocity. If the kinetic energy of the cylinder is 75 J , that of the sphere must be

A disc and a solid sphere of same mass and radius roll down an inclined plane. The ratio of thhe friction force acting on the disc and sphere is

Two objects having same mass 'm' are moving with velocities v and 2v. Find ratio of their kinetic energies.

NIKITA PUBLICATION-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS
  1. The part of total kinetic energy is the rotational kinetic energy of a...

    Text Solution

    |

  2. If a flywheel of mass m kg and radius r m is revolving at n rps, then ...

    Text Solution

    |

  3. A thin ring and a solid disc of same mass and radius are rolling with ...

    Text Solution

    |

  4. When a solid sphere rolls without slipping on a surface, its rotationa...

    Text Solution

    |

  5. A ring and a disc having the same mass, roll without slipping with the...

    Text Solution

    |

  6. A flywheel is in the form of solid circular wheel of mass 72 kg and ra...

    Text Solution

    |

  7. The radius of gyration of flywheel is (3//pi)m and its mass is 1 kg. I...

    Text Solution

    |

  8. The radius of a wheel is R and its radius of gyration about its axis p...

    Text Solution

    |

  9. Two bodies with moment of inertia l(1) and l(2) (l(1) gt l(2)) have eq...

    Text Solution

    |

  10. The rotational kinetic energy of a body is E. In the absence of extern...

    Text Solution

    |

  11. Angular momentum of body changes by 80 kg m^(2)//s, when its angular v...

    Text Solution

    |

  12. A fly wheel rotating about a fixed axis has a kinetic energy of 360 J....

    Text Solution

    |

  13. A disc of moment of inertia 9.8//pi^(2)kg m^(2) is rotating at 600 rpm...

    Text Solution

    |

  14. If the variation of rotational kinetic energy E with the angular momen...

    Text Solution

    |

  15. A circular disc of mass 0.41 kg and radius 10 m rolls without slipping...

    Text Solution

    |

  16. If the angular momentum of a rotating body about an axis is increased ...

    Text Solution

    |

  17. If the kinetic energy of a rotating body about an axis is decreased by...

    Text Solution

    |

  18. A boy stands on a freely rotating platform with his arms extended. His...

    Text Solution

    |

  19. A rod of mass M and length l is suspended freely from its endandit...

    Text Solution

    |

  20. A hollow sphere rolls on a horozontal surface without slipping. Then ...

    Text Solution

    |