Home
Class 11
PHYSICS
A ring of diameter 0.4 m and of mass 10 ...

A ring of diameter 0.4 m and of mass 10 kg is rotating about its geometrical axis at the rate of 35 ratation/second. Find the moment of intertia.

A

`0.1`

B

`0.2`

C

`0.3`

D

`0.4`

Text Solution

Verified by Experts

The correct Answer is:
D
Moment of intertia of the ring about its axis is
`I=MR^(2)`
`I=10xx(0.2)^(2)=10xx0.04 =0.4 "kg-m"^(2)`.
Promotional Banner

Topper's Solved these Questions

  • ROTATION

    DC PANDEY|Exercise Check point 9.1|20 Videos

  • ROTATION

    DC PANDEY|Exercise Check point 9.2|20 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

A ring of diameter 0.4 m and of mass 10 kg is rotating about its axis at the rate 2100 rpm. Find (i) moment of inertia (ii) angular momentum and (iii) rotational K.E. of the ring.

A ring of diameter 0.4 m and of mass 10 kg is rotating about its axis at the rate of 2100 rpm. Calculate moment of inertia, angular momentum and rotational KE of the ring.

A ring of mass 10 kg and radius 0.2 m is rotating about its geometrical axis at 20 rev/sec. Its moment of inertia is

A ring of mass 10 kg and diameter 0.4 meter is rotating about its geometrical axis at 1200 rotations per minute. Its moment of inertia and angular momentum will be respectively:-

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

A ring of radius 0.5 m and mass 10 kg is rotating about its diameter with angular velocity of 20 rad/s. Its KE is :-

If a uniform solid sphere of diameter 0.2 m and mass 10 kg is rotated about its diameter with an angular velocity of 2 rad/s, then the its angular momentum in kg m^(2)//s will be

DC PANDEY-ROTATION-(C) Chapter Exercises
  1. A ring of diameter 0.4 m and of mass 10 kg is rotating about its geome...

    Text Solution

    |

  2. A wheel of radius 10 cm can rotate freely about its centre as shown in...

    Text Solution

    |

  3. From a disc of radius R and mass M, a circular hole of diameter R, who...

    Text Solution

    |

  4. A disc and a solid sphere of same radius but different masses roll off...

    Text Solution

    |

  5. A uniform circular disc of radius 50 cm at rest is free to turn about ...

    Text Solution

    |

  6. A mass m moves in a circles on a smooth horizontal plane with velocity...

    Text Solution

    |

  7. Three identical spherical shells each of mass m and radius r are place...

    Text Solution

    |

  8. A uniform metallic rod rotates about its perpendicular bisector with ...

    Text Solution

    |

  9. A massless rod S having length 2l has equal point masses attached to i...

    Text Solution

    |

  10. A particle travels in a circle of radius 20 cm at a uniformly increasi...

    Text Solution

    |

  11. A solid sphere of radius r r is rolling on a horizontal surface. The r...

    Text Solution

    |

  12. If two circular discs A and B are of same mass but of radii r and 2r r...

    Text Solution

    |

  13. Choose the wrong statement.

    Text Solution

    |

  14. Two particle A and B are moving as shown in the figure Their tota...

    Text Solution

    |

  15. A rod of mass 5 kg is connected to the string at point B. The span of ...

    Text Solution

    |

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

    Text Solution

    |

  17. A ring of radius 0.5 m and mass 10 kg is rotating about its diameter w...

    Text Solution

    |

  18. A uniform sphere of mass 500 g rolls without slipping on a plane surfa...

    Text Solution

    |

  19. A rotating wheel changes angular speed from 1800 rpm to 3000 rpm in 20...

    Text Solution

    |

  20. The moment of inertia of ring about an axis passing through its diamet...

    Text Solution

    |

  21. Two bodies have their moments of inertia I and 2I, respectively about ...

    Text Solution

    |