Home
Class 12
PHYSICS
A fly wheel rotating about a fixed axis ...

A fly wheel rotating about a fixed axis has a kinetic energy of `360 J`. When its angular speed is `30 rad s^(-1)`. The moment of inertia of the wheel about the axis of rotation is

A

`0.6 kg- m^(2)`

B

`0.15 kg- m^(2)`

C

`0.8 kg- m^(2)`

D

`0.7.5 kg- m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • RE-NEET 2024

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Question|50 Videos

  • SOLID AND SEMICONDUCTOR DEVICES

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|105 Videos

Similar Questions

Explore conceptually related problems

A flywheel rotating about a fixed axis has a kinetic energy of 360J when its angular speed is 30 radian s^(-1) . The moment of inertia of the wheel about the axis of rotation is

A body rotating about a fixed axis has a kinetic energy of 360 J when its angular speed is 30 rad/sec. The moment of inertia of the wheel about its axis of rotation is

A flywheel rotating about a fixed axis has a kinetic energy of 225 J when its angular speed is 30 rad/s. What is the moment of inertia of the flywheel about its axis of rotation?

A flywheel rotating about a fixed axis has a kinetic energy of 225 J when its angular speed is 25 rad/s. The angular momentum of the flywheel about its axis of rotation is

A wheel of mass 5 kg and radius 0.40 m is rolling on a road without sliding with angular velocity 10 rad s^-1 . The moment of ineria of the wheel about the axis of rotation is 0.65 kg m^2 . The percentage of kinetic energy of rotate in the total kinetic energy of the wheel is.

A wheel is rotating at a speed of 1000 rpm and its KE is 10^(6) J . What is moment of inertia of the wheel about its axis of rotation ?

A wheel rotating at an angular speed of 20 rad/s ils brought to rest by a constant trouque in 4.0 secons. If the moiment of inertia of the wheel about the axis of rotation is 0.20 kg-m^2 find the work done by the torque in the first two seconds.

The moment of inetia of a flywheel having kinetic energy 360 J and angular speed of "20 rad s"^(-1) is

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ROTATIONAL MOTION-Exercise
  1. If a flywheel makes 120" rev"//"min", then its angular speed will be

    Text Solution

    |

  2. The angular momentum of a body with mass (m) moment of inertia (I) and...

    Text Solution

    |

  3. ABC is a traiangular plate of uniform thickness. The sides are in the ...

    Text Solution

    |

  4. The angular speed of an engine wheel making 90" rev"//"min" is

    Text Solution

    |

  5. Two racing cars of masses m and 4m are moving in circles of radii r an...

    Text Solution

    |

  6. If a spherical ball rolls on a table without slipping, the fraction of...

    Text Solution

    |

  7. A thin uniform circular ring is rolling down an inclined plane of incl...

    Text Solution

    |

  8. Angular momentum is

    Text Solution

    |

  9. In a rectangle ABCD (BC=2AB). The moment of inertia is minimum along a...

    Text Solution

    |

  10. A solid sphere, disc and solid cylinder, all of the same mass, are all...

    Text Solution

    |

  11. The speed of a homogeneous solid sphere after rolling down an inclined...

    Text Solution

    |

  12. A particle of mass m=5 kg is moving with a uniform speed v=3 sqrt(2) i...

    Text Solution

    |

  13. If a sphere is rolling, the ratio of the translation energy to total k...

    Text Solution

    |

  14. The moment of inertia of a body about a given axis is 1.2 kg m^(2). In...

    Text Solution

    |

  15. Moment of inertia of a uniform circular disc about a diameter is I. It...

    Text Solution

    |

  16. A fly wheel rotating about a fixed axis has a kinetic energy of 360 J....

    Text Solution

    |

  17. At any instant, a rolling body may be considered to be in pure rotatio...

    Text Solution

    |

  18. A solid cylinder of mass M and radius R rolls down an inclined plane o...

    Text Solution

    |

  19. A ring of mass m and radius r rotates about an axis passing through it...

    Text Solution

    |

  20. A solid homogeneous sphere is moving on a rough horizontal surface, pa...

    Text Solution

    |