Home
Class 12
PHYSICS
A rotating disc of mass M and radius R i...

A rotating disc of mass M and radius R is brought to rest on its flat surface, which has a coefficient of kinetic friction with floor as u. If it is in pure rotation about its central axis oriented vertically, the magnitude of angular deceleration is

A

`(2mug)/(3R)`

B

`(3mug)/(4R)`

C

`(4mug)/(3R)`

D

`(3mug)/(2R)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2019

    TARGET PUBLICATION|Exercise MCQ|45 Videos

  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Evaluation Test|17 Videos

Similar Questions

Explore conceptually related problems

A disc of mass m and radius R rotating with angular speed omega_(0) is placed on a rough surface (co-officient of friction =mu ). Then

A ring of mass m and radius R is being rotated about its axis with angular velocity omega . If a increases then tension in ring

A solid cylinder of mass M and radius R rotates about its axis with angular speed omega . Its rotational kinetic energy is

A ring of mass m and radius R is being rotated about its axis with constant angular velocity omega in the gravity free space. Find tension in the ring.

A circular disc is rotating about its own axis, the direction of its angular momentum is

A circular disc of mass 4kg and of radius 10cm is rotating about its natural axis at the rate of 5 rad//sec . Its angular momentum is

When a circular disc of radius 0.5 m is rotating about its own axis, then the direction of its angular momentum is

A homogeneous disc of mass 2 kg and radius 15 cm is rotating about its axis with an angular velocity of 4 rad/s. the linear momentum of the disc is

A disc of a mass M and radius R can rotate freely in vertical plane about a horizontal axis at O . Distant r from the centre of disc as shown in the figure. The disc is released from rest in the shown position. The angular acceleration of disc when OC rotates by an angles of 37^(@) is

TARGET PUBLICATION-ROTATIONAL MOTION -MCQ
  1. A flywheel at rest is to reach an angular velocity of 24 rad/s in 8...

    Text Solution

    |

  2. A wheel has angular acceleration of 3.0 rad//s^2 and an initial angula...

    Text Solution

    |

  3. A wheel of moment of inertia 2 kgm^(2) is rotating about an axis pa...

    Text Solution

    |

  4. An annular ring with inner and outer radii R1 and R2 is rolling wihtou...

    Text Solution

    |

  5. A cord is wound round the circumference of wheel of radius r. The axis...

    Text Solution

    |

  6. A mass 'm' is supported by a massless string wound around a uniform ho...

    Text Solution

    |

  7. Two solid cylinders P and Q of same mass and same radius start rolling...

    Text Solution

    |

  8. A body sliding on a smooth inclined plane requires 4s to reach the bot...

    Text Solution

    |

  9. A hollow spere of mass M and radius R is rotating with angular frequen...

    Text Solution

    |

  10. An autmobile moves on road with a speed of 54 km//h. The radius of its...

    Text Solution

    |

  11. A ceiling fan rotates about its own axis with some angular velocity....

    Text Solution

    |

  12. Two rings are placed with common centres such that their planes are pe...

    Text Solution

    |

  13. A rigid body can be hinged about any point on the axis. When it is hin...

    Text Solution

    |

  14. A rotating disc of mass M and radius R is brought to rest on its flat ...

    Text Solution

    |

  15. Two particles of masses m and M are a distance d apart and constitute ...

    Text Solution

    |

  16. A solid flywheel of mass M and radius r revolves with an angular veloc...

    Text Solution

    |

  17. A sphere of mass m rolls without slipping on a plane inclined at theta...

    Text Solution

    |

  18. A body of mass 3 kg is moving along the line 5y= 12x +39 with a veloci...

    Text Solution

    |

  19. A thin rod is placed co-axially within a thin hollow tube which lies o...

    Text Solution

    |

  20. A sphere rolls on the surface with velocity v. It encounters a smooth ...

    Text Solution

    |