Home
Class 11
PHYSICS
A person sitting firmly over a rotating ...

A person sitting firmly over a rotating stool has his arms stretched. If he folds his arms, his angular momentum about the axis of rotation

A

Increas

B

Decreases

C

Remains unchanged

D

Doubles

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Numerical MCQs Single Option Corrrect|39 Videos
  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise paragraph|24 Videos
  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|30 Videos
  • NEWTONS LAWS OF MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problem|81 Videos
  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolved|1 Videos

Similar Questions

Explore conceptually related problems

A man, sitting firmly over a rotating stool has his arms streched. If he folds his arms, the work done by the man is.

A man is sitting on a rotating stool with his arms outstretched. If suddenly he folds his arms the angular velocity of the man would

A gymnast standing on a rotating stool with his arms outstretched, suddenly lowers his arms

If a person sitting on a rotating stool with his hands outstretched, suddenly lowers his hands, then his

If a gymnast sitting on a rotating disc with his arms out stretched suddenly lower his arms, then

if the earth is treated as a sphere of radius Radn mass M, Its angular momentum about the axis of its rotation with period T, is

If the kinetic energy of a rotating body about an axis is decreased by 36%, its angular momentum about that axis is

A circular ring of diameter 40 cm and mass 1 kg is rotating about an axis normal to its plane and passing through the centre with a frequency of 10 rps . Calculate the angular momentum about the axis of rotation.

Angular Momentum of a Body Rotating About Fixed Axis of Rotation

PHYSICS GALAXY - ASHISH ARORA-RIGID BODIES AND ROTATIONAL MOTION-Conceptual MCQs Single Option Correct
  1. A circular table rotates about a vertical axis with a constant angular...

    Text Solution

    |

  2. A uniform rod is kept vertically on a horizontally smooth surface at ...

    Text Solution

    |

  3. A person sitting firmly over a rotating stool has his arms stretched. ...

    Text Solution

    |

  4. A solid sphere and a hollow sphere are identical in mass and radius. T...

    Text Solution

    |

  5. Consider four bodies-a ring, a cube, a disc and a sphere. All the bodi...

    Text Solution

    |

  6. A circular disc A of radius r is made from an iron plate of thickness ...

    Text Solution

    |

  7. A plank P is placed on a solid cylinder S, which rolls on a horizontal...

    Text Solution

    |

  8. The locus of all the points on theX- Y plane, about which the moment o...

    Text Solution

    |

  9. A particle moves with a constant velocity parallel to the X-axis. Its ...

    Text Solution

    |

  10. A body is rotating uniformly about a vertical axis fixed in an inertia...

    Text Solution

    |

  11. Two uniform solid spheres having unequal rdii are released from rest f...

    Text Solution

    |

  12. A sphere can roll without slipping on a surface inclined at an angle t...

    Text Solution

    |

  13. A boiled egg and a raw egg of same mass and size are made to rotate ab...

    Text Solution

    |

  14. The angular velocity of the engine (and hence of the wheel) on a scoot...

    Text Solution

    |

  15. Only under gravity and some initial impulsea sphere cannot roll withou...

    Text Solution

    |

  16. A closed cylindrica tube containing some water (not filling the entire...

    Text Solution

    |

  17. Let I(A) and I(B) be moments of inertia of a body about two axes A and...

    Text Solution

    |

  18. A circular plarform is free to rotate in a horizontal plane about a ve...

    Text Solution

    |

  19. A triangular plate of uniform thickness and density is made to rotate ...

    Text Solution

    |

  20. A satellite is revolving round the earth. If the universal gravitation...

    Text Solution

    |