Home
Class 11
PHYSICS
The K.E. of a body rotating at 300 rpm i...

The K.E. of a body rotating at 300 rpm is 62.8 J. Its angular momentum is

A

`1Js`

B

`2Js`

C

`4JS`

D

`8Js`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|99 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH SERIES|Exercise Exercise-I|143 Videos

  • SURFACE TENSION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS )|8 Videos

  • THERMAL PROPERTIES OF MATTER

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) PRACTICE SHEET (ADVANCED) Integer/Subjective Type Questions|2 Videos

Similar Questions

Explore conceptually related problems

The diameter of a flywheel is 1 m. It has a mass of 20 kg. It is rotating about its axis with a speed of 120 rotations in 1 min. Its angular momentum in kg-m^(2)s^(-1)is

If the K.E. of a rotating body about an axis is decreased by 36% , its angular momentum about that axis

(A) : When there is no external torque moment of inertia of a rotating body changes, its angular momentum remain conserved, but its kinetic energy changes. (R ) : Angular momentum does not depend upon moment of inertia of the body.

AAKASH SERIES-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-Exercise-II
  1. A wheel rotating at angular speed of 20rads^(-1), is brought to rest b...

    Text Solution

    |

  2. A thin uniform rod of length l and mass m is swinging freely about a h...

    Text Solution

    |

  3. The K.E. of a body rotating at 300 rpm is 62.8 J. Its angular momentum...

    Text Solution

    |

  4. If the velocity of a rotating body of mass 50 kg is given by bar(V)=3b...

    Text Solution

    |

  5. If the Earth shirnks such that its density becomes 8 times to the pres...

    Text Solution

    |

  6. A point sized sphere of mass .m. is suspended from a point using a str...

    Text Solution

    |

  7. Two rigid bodies have same angular momentum about their axes of symmet...

    Text Solution

    |

  8. One end of a uniform rod of mass m and length l is clamped. The rod li...

    Text Solution

    |

  9. A cubical block of mass M and edge a slides down a rough inclined plan...

    Text Solution

    |

  10. A particle of mass m is moving yz-plane with a uniform velocity v with...

    Text Solution

    |

  11. A mass m is supported by a massless string wound around a uniform holl...

    Text Solution

    |

  12. A wheel which is initially at rest is subjected to a constant angular ...

    Text Solution

    |

  13. A car is negotiating a curved road of radius R. The road is banked at ...

    Text Solution

    |

  14. A solid cylinder of mass 50kg and radius 0.5m is free to rotate about ...

    Text Solution

    |

  15. A solid sphere rolls down without slipping from rest on a 30^(@) incli...

    Text Solution

    |

  16. A hollow shpere rolls down a 30^(@) incline of length 6m without slipp...

    Text Solution

    |

  17. For a body rolling along a level surface, the translational and rotati...

    Text Solution

    |

  18. A ring and a disc of same mass roll without slippling along a horizont...

    Text Solution

    |

  19. When a hollow sphere is rolling without slipping on a rough horizontal...

    Text Solution

    |

  20. A small object of uniform density roll up a curve surface with an init...

    Text Solution

    |