Home
Class 11
PHYSICS
A uniform thin rod of length l is suspen...

A uniform thin rod of length l is suspended from one of its ends and is rotated at f rotations per second. The rotational kinetic energy of the rod will be

A

`(2)/(3)pi^(2)f^(2)ml^(2)`

B

`(4)/(3)f^(2)ml^(2)`

C

`4pi^(2)f^(2)ml^(2)`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on rolling on incline plane)|28 Videos

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on motion of connected mass)|10 Videos

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on angular momentum)|16 Videos

  • NEWTONS LAWS OF MOTION

    ERRORLESS |Exercise Self Evaluation Test|16 Videos

  • SIMPLE HARMONIC MOTION

    ERRORLESS |Exercise simple Harmonic Motion|21 Videos

Similar Questions

Explore conceptually related problems

A uniform rod of length l is from rest such that it rotates about a smooth pivot. The angular speed of the rod when it becomes vertical is. .

A uniform rod of length l is given an impulse at right angles to its length as shown. Find the distance of instantaneous centre of rotation from the centre of the rod. .

A uniform rod of mass m and length L lies radialy on a disc rotating with angular speed omega in a horizontal plane about vertical axis passing thorugh centre of disc. The rod does not slip on the disc and the centre of the rod is at a distance 2L from the centre of the disc. them the kinetic energy of the rod is

A rod of length l having uniformly distributed charge Q is rotated about one end with constant frequency f Its magnetic moment

A rod of mass m and length l is connected with a light rod of length l . The composite rod is made to rotate with angular velocity omega as shown in the figure. Find the a. translational kinetic energy. b. rotational kinetic energy. c. total kinetic energy of rod.

A uniform rod of mass m and length l is fixed from Point A , which is at a distance l//4 from one end as shown in the figure. The rod is free to rotate in a vertical plane. The rod is released from the horizontal position. What is the reaction at the hinge, when kinetic energy of the rod is maximum?

ERRORLESS -ROTATIONAL MOTION-Practice Problems (Problems based on kinetic energy, work and power)
  1. What is the ratio of the rolling kinetic energy and rotational kinetic...

    Text Solution

    |

  2. A solid sphere is moving on a horizontal plane. Ratio of its translati...

    Text Solution

    |

  3. The speed of rolling of a ring of mass m changes from V to 3V . What...

    Text Solution

    |

  4. A disc of mass 4 kg and of radius 1 m rolls on a horizontal surface wi...

    Text Solution

    |

  5. The ratio of kinetic energies of two spheres rolling with equal centre...

    Text Solution

    |

  6. A symmetrical body of mass M and radius R is rolling without slipping...

    Text Solution

    |

  7. A solid sphere of mass 1 kg rolls on a table with linear speed 1 m/s. ...

    Text Solution

    |

  8. A circular disc has a mass of 1kg and radius 40 cm. It is rotating abo...

    Text Solution

    |

  9. The rotational kinctic energy of a body rotating about proportional to

    Text Solution

    |

  10. If a body completes one revolution in pi sec then the moment of inerti...

    Text Solution

    |

  11. A tangential force F is applied on a disc of radius R, due to which it...

    Text Solution

    |

  12. If the rotational kinetic energy of a body is increased by 300 %, then...

    Text Solution

    |

  13. A wheel of moment of inertia 10 kgm^2 is rotating at 10 rotations per ...

    Text Solution

    |

  14. A flywheel has moment of inertia 4kg-m^(2) and has kinetic energy of ...

    Text Solution

    |

  15. An engine develops 100 kW, when rotating at 1800 rpm. Torque required ...

    Text Solution

    |

  16. A wheel of radius r rolls without slipping with a speed v on a horizon...

    Text Solution

    |

  17. A fly wheel of moment of inertia I is rotating at n revolutions per se...

    Text Solution

    |

  18. If L, M and P are the angular momentum, mass and linear momentum of a ...

    Text Solution

    |

  19. A uniform thin rod of length l is suspended from one of its ends and i...

    Text Solution

    |

  20. A body rotating at 20rad//s is acted upon by a constant torque providi...

    Text Solution

    |