Home
Class 11
PHYSICS
The angular momentum of a system of part...

The angular momentum of a system of particles is conserved

A

when no external force acts upon the system

B

when no external torque acts upon the system

C

when no external impulse acts upon the system

D

when axis of rotation remains same

Text Solution

Verified by Experts

The correct Answer is:
B
Torque, `tau=(dL)/(dt)` If `tau==0,L="constant"`
Promotional Banner

Topper's Solved these Questions

  • ROTATION

    DC PANDEY|Exercise (B) Chapter Exercises|25 Videos

  • ROTATION

    DC PANDEY|Exercise (C) Chapter Exercises|39 Videos

  • ROTATION

    DC PANDEY|Exercise Check point 9.3|15 Videos

  • RAY OPTICS

    DC PANDEY|Exercise Integer type q.|15 Videos

  • ROTATIONAL MECHANICS

    DC PANDEY|Exercise Subjective Questions|2 Videos

Similar Questions

Explore conceptually related problems

Show that the total linear momentum of a system of particles is conserved in the absence of any external force. Also show that total linear momentum of the system is equal to the product of the total mass of the system and the velocity of its centre of mass.

A particle is moving in a horizontal uniform circular motion. The angular momentum of the particle is conserved about the point :

Assertion : The total momentum of an isolated system of particles is conserved. Reason: The law of conservation of momentum follows from the second and third law of motion.

Prove that the rate of change of total angular momentum of a system of particles is equal to the total torque acting on the system.

Angular momentum of the system of particles changes when

A particle undergoes uniform circular motion. About which point on the plane of the circle, will the angular momentum of the particle remain conserved?

The angular momentum of a particle is

Is angular momentum of a system always conserved ?

DC PANDEY-ROTATION-(A) Chapter Exercises
  1. The angular momentum of a system of particles is conserved

    Text Solution

    |

  2. If a person standing on a rotating disc stretches out his hands, the a...

    Text Solution

    |

  3. When a disc rotates with uniform angular velocity, which of the follow...

    Text Solution

    |

  4. A ring of diameter 0.4 m and of mass 10 kg is rotating about its axis ...

    Text Solution

    |

  5. A uniform disc of radius a and mass m, is rotating freely with angular...

    Text Solution

    |

  6. A uniform square plate has a small piece Q of an irregular shape remov...

    Text Solution

    |

  7. A diver in a swimming pool bends his head before diving, because it

    Text Solution

    |

  8. A ody is in pure rotation. The linear speed v of a particle, the dista...

    Text Solution

    |

  9. The rotational kinetic energy of a body is E and its moment of inertia...

    Text Solution

    |

  10. A body is under the action of two equal and oppositely directed forces...

    Text Solution

    |

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

    Text Solution

    |

  12. Moment of a force of magnitude 10 N acting along positive y-direction ...

    Text Solution

    |

  13. The radius of gyration of a uniform rod of length L about an axis pass...

    Text Solution

    |

  14. Five particles of mass 2 kg are attached to the rim of a circular disc...

    Text Solution

    |

  15. A particle is moving in a circular orbit with constant speed. Select w...

    Text Solution

    |

  16. If the equation for the displacement of a particle moving on a circle ...

    Text Solution

    |

  17. A wheel is a rest. Its angular velocity increases uniformly and become...

    Text Solution

    |

  18. A rigid body rotates about a fixed axis with variable angular velocity...

    Text Solution

    |

  19. A wheel is rotating at the rate of 33 "rev min"^(-1). If it comes to s...

    Text Solution

    |

  20. A wheel is rotating at 900 rpm about its axis. When power is cut off i...

    Text Solution

    |