Home
Class 11
PHYSICS
If no external torque acts on a body, wi...

If no external torque acts on a body, will its angular velocity remain conserved ?

Text Solution

Verified by Experts

When `tau = 0, L = I omega =` constant.
`:.` Angular velocity `omega` will be constant so long as `I` remains constant i.e. if moment of inertia of the body about the given axis remains fixed.
Promotional Banner

Topper's Solved these Questions

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise CONCEPTUAL PROBLEMS II.|2 Videos
  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise VERY SHORT ANSWER QUESTIONS I.|2 Videos
  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise CONCEPTUAL PROBLEMS I.|2 Videos
  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos
  • THERMODYNAMICS

    PRADEEP|Exercise Assertion- Reason Type Questions|19 Videos

Similar Questions

Explore conceptually related problems

If no external force acts on a body, it will

Assertion : The speed of a whirl wind in a tornado is alarmigly high. Reason : If no external torque acts on a body, its angualr velocity remains constant.

When no external torque acts on a system, its angular momentum remains constant. Is the statement true ? Should kinetic energ of rotation of the system remain constant ? If yes, why , and if no, why not?

If a constant torque acts on a body, the body?

What is the torque acting on a body moving with constant angular velocity ?

If the resultant external torque acting on a body is zero, then angular momentum of the body

When there is no external torque acting on a body moving in an elliptical path, which of the following quantities remain constant ?

Assertion : If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant. Reason : The linear momentum of an isolated system remains constant.

Satement-1: if there is no external torque on a body about its centre of mass, then the velocity of the center of mass remains constant. Statement-2: The linear momentum of an isolated system remains constant.

PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-CONCEPTUAL PROBLEMS
  1. Two satellites of equal masses, which can be considered as particles a...

    Text Solution

    |

  2. How will you distinguish between a hard boiled egg and a raw egg by s...

    Text Solution

    |

  3. If earth were to shrink suddenly, what would happen to the length of t...

    Text Solution

    |

  4. If two circular disks of the weight and thickness are made from metals...

    Text Solution

    |

  5. The moments of inertia of two rotating bodies A and B are I(A) and I(B...

    Text Solution

    |

  6. If polar ice caps melt, then the time duration of one day

    Text Solution

    |

  7. If no external torque acts on a body, will its angular velocity remain...

    Text Solution

    |

  8. How does an ice-skater, a ballet dancer or an acrobat take advantage o...

    Text Solution

    |

  9. Explain why the speed of a whirl wind in a tornado is alarmingly high ...

    Text Solution

    |

  10. Explain how is a cat able to land on its feet after a fall taking adva...

    Text Solution

    |

  11. If angular momentum is conserved in a system whose moment of inertia i...

    Text Solution

    |

  12. When there is no external torque acting on a rotating body, which of t...

    Text Solution

    |

  13. Equal torques are applied on a cylinder and a hollow sphere. Both have...

    Text Solution

    |

  14. A soild sphere is made to roll down from the same height on two inclin...

    Text Solution

    |

  15. A thin wheel can stay upright on its rim for a considerable length of ...

    Text Solution

    |

  16. Two identical cylinders 'runa race' starting from rest at the top of a...

    Text Solution

    |

  17. A one kg rolling on a smooth horizontal surface at 20 m s^(-1) comes t...

    Text Solution

    |

  18. A very small particle rests on the top of a hemisphere of radius 20 cm...

    Text Solution

    |

  19. The angular velocity of earth around the sun increases when it comes c...

    Text Solution

    |

  20. A particle performing uniform circular motion gas angular momentum L. ...

    Text Solution

    |