Home
Class 12
PHYSICS
A constant torque acting on a uniform ci...

A constant torque acting on a uniform circular wheel changes its angular momentum from `A_(0)` to `4 A_(0)` in `4` seconds. Find the magnitude of this torque.

A

`4 A_(0)`

B

`A_(0)`

C

`3A_(0)//4`

D

`12A_(0)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 2 (Level - II)|25 Videos

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 3 (Level - I)|27 Videos

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 1|77 Videos

  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|14 Videos
MOTION-10 ROTATIONAL-Exercise - 2 (Level -I)
  1. If a person sitting on a rotating stool with his hands outstretched, s...

    Text Solution

    |

  2. A thin circular ring of mass M and radius r is rotating about its axis...

    Text Solution

    |

  3. A constant torque acting on a uniform circular wheel changes its angul...

    Text Solution

    |

  4. A rod of length L is hinged from one end. It is brought to a horizonta...

    Text Solution

    |

  5. A small bead of mass m moving with velocity v gets threaded on a stati...

    Text Solution

    |

  6. A thin uniform straight rod of mass 2 kg and length 1 m is free to rot...

    Text Solution

    |

  7. A child with mass m is standing at the edge of a disc with moment of i...

    Text Solution

    |

  8. A uniform rod is fixed to a rotating turntable so that its lower end i...

    Text Solution

    |

  9. A uniform rod is fixed to a rotating turntable so that its lower end i...

    Text Solution

    |

  10. One ice sketer of mass m moves with speed 2v to the right, while ano...

    Text Solution

    |

  11. A uniform rod AB of length L and mass M is lying on a smooth table. A ...

    Text Solution

    |

  12. A uniform rod AB of mass m and length l is at rest on a smooth horizon...

    Text Solution

    |

  13. A uniform rod of mass M is hinged at its upper end. A particle of mass...

    Text Solution

    |

  14. Two particles of equal mass m at A and B are connected by a rigid ligh...

    Text Solution

    |

  15. A body of mass m is moving with a constant velocity along a line paral...

    Text Solution

    |

  16. A triangular block ABC of mass m and side 2a lies on a smooth horizont...

    Text Solution

    |

  17. A recording disc rotates steadily at n(1) rps on a table. When a small...

    Text Solution

    |

  18. A yo-yo is resting on a perfectly rough horizontal table . Forces F(1)...

    Text Solution

    |

  19. A plank with a uniform sphere placed on it. Rests on a smooth horizont...

    Text Solution

    |

  20. A hollow sphere of radius R and mass m fully filled with water of mass...

    Text Solution

    |