Home
Class 12
PHYSICS
The rotational kinetic energy of a rigid...

The rotational kinetic energy of a rigid body of moment of inertia 5 ` kg-m^(2)` is 10 joules. The angular momentum about the axis of rotation would be -

A

100 joule - sec

B

50 joule-sec

C

10 joule-sec

D

2 joule-sec

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 2 (Level -I)|51 Videos

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 2 (Level - II)|25 Videos

  • 10 ROTATIONAL

    MOTION|Exercise Example 31|1 Videos

  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|14 Videos

Similar Questions

Explore conceptually related problems

Kinetic energy of a body is 4j and its moment of inertia is 2kg m^(2) , then angular momentum is

The kinetic energy of a body ia 4 joule and its moment of inertia is 2" kg m"^(2) . Angular momentum is

The rotational kinetic energy of two bodies of moment of inertia 9 kg m^(2) and 1kg m^(2) are same . The ratio of their angular momenta is

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

The K.E. of a body is 3 joule and its moment of inertia is "6 kg m"^(2) . Then its angular momentum will be

If the kinetic energy of rotation of a body about an axis is 9 J and the moment of inertia is 2" kg m"^(2) , then the angular velocity of the body about the axis of rotation in rad/s is

A body of moment of inertia 2kg-m^(2) has a rotational kinetic energy of 4 J. What is the angular momentum of the body ?

Calculate the angular momentum of a body whose rotational energy is 10 joule. If the angular momentum vector coincides with the axis of rotation and its moment of inertia about this axis is 8xx10^(-7) kg m^(2)

MOTION-10 ROTATIONAL-Exercise - 1
  1. A particle of mass 2 kg located at the position (vec(i) + vec(j)) m ...

    Text Solution

    |

  2. The angular momentum of a flywheel having a moment of inertia of 0.4 ...

    Text Solution

    |

  3. The rotational kinetic energy of a rigid body of moment of inertia 5 ...

    Text Solution

    |

  4. The angular velocity of a body changes from one revolution per 9 sec...

    Text Solution

    |

  5. A dog of mass m is walking on a pivoted disc of radius R and mass M in...

    Text Solution

    |

  6. A particle starts from the point (0m, 8m) and moves with uniform veloc...

    Text Solution

    |

  7. A uniform rod kept vertically on the ground falls from rest. Its foot ...

    Text Solution

    |

  8. A thin uniform rigid rod of length L is hinged at one end so that it c...

    Text Solution

    |

  9. A thin uniform heavy rod of length l hangs from a horizontal axis pass...

    Text Solution

    |

  10. A uniform rod of mass M & length L is hinged about its one end as sh...

    Text Solution

    |

  11. Two identical rod are joined as shown. The system is pivoted at point ...

    Text Solution

    |

  12. A ball of mass m moving with velocity v, collide with the wall elastic...

    Text Solution

    |

  13. A uniform rod of mass M has an impulse applied at right angles to one ...

    Text Solution

    |

  14. A particle P strikes the rod R perpendicularly as shown. The rod is su...

    Text Solution

    |

  15. A particle P strikes the rod R perpendicularly as shown. The rod is su...

    Text Solution

    |

  16. A particle P strikes the rod R perpendicularly as shown. The rod is su...

    Text Solution

    |

  17. Two separate cylinders of masses m(=1 kg ) & 4m radii R(=10cm) and 2R ...

    Text Solution

    |

  18. Mass of the pulley is m & radius is R. Assume pulley to be disc. Block...

    Text Solution

    |

  19. A ring of radius R rolls without slipping on a rough horizontal surfac...

    Text Solution

    |

  20. The speed of a uniform spherical shell after rolling down an inclined ...

    Text Solution

    |