Home
Class 12
PHYSICS
A ring of diameter 1m is rotating with a...

A ring of diameter 1m is rotating with an angular momentum of 10 Joule-sec. The necessary tangential force required to increase its angular momentum by 50 % in 1 sec will be (in newtons)

A

10

B

5

C

15

D

20

Text Solution

Verified by Experts

The correct Answer is:
A
`tau = (dL)/(dt) rArr F. r = (dL)/(dt) rArr F = 10`
Promotional Banner

Topper's Solved these Questions

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.62|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.63|9 Videos

  • DAILY PRACTICE PROBLEM

    RESONANCE|Exercise DPP No.60|9 Videos

  • CURRENT ELECTRICITY

    RESONANCE|Exercise High Level Problems (HIP)|21 Videos

  • ELECTRO MAGNETIC WAVES

    RESONANCE|Exercise Exercise 3|27 Videos

Similar Questions

Explore conceptually related problems

A rigid body rotates with an angular momentum L. If its rotational kinetic energy is made 4 times, its angular momentum will become

If the angular momentum of a body increases by 50%, its kinetic energy of rotation increases by

Angular momentum of the particle rotating with a central force is constant due to

A particle of mass 0.5kg is rotating in a circular path of radius 2m and centripetal force on it is 9 Newtons Its angular momentum (in J-sec)

Angular momentum of the particle rotating with a central force is constant due to.

The body is rotating with uniform angular velocity ( omega ) having rotational kinetic energy ( E) . Its angular momentum (L ) is :

If 'A' is areal velocity of a planet of mass M , its angular momentum is

RESONANCE-DAILY PRACTICE PROBLEM-DPP No.61
  1. In the given circuit assuming inductor and source to be ideal, the pha...

    Text Solution

    |

  2. Three identical circular coils A, B and C are placed coaxial (with pla...

    Text Solution

    |

  3. Two plane circular coilds P and Q have radii r(1) and r(2), respective...

    Text Solution

    |

  4. The time required for a 50Hz alternating current to increase from zero...

    Text Solution

    |

  5. The self-inductance of a coil is 2H. The current in the coil changes f...

    Text Solution

    |

  6. In the figure given below, the position time graph of a particle of ma...

    Text Solution

    |

  7. If at t = 0 the switch S(w) is closed , then the charge on capacitor (...

    Text Solution

    |

  8. Let (nr) and (nb) be respectively the number of photons emitted by a r...

    Text Solution

    |

  9. The dimensions of shear modulus are

    Text Solution

    |

  10. A particle of mass m is given initial horizontal velocity of magnitude...

    Text Solution

    |

  11. In the figure shown, a small ball of mass 'm' can move witgout sliding...

    Text Solution

    |

  12. A projectile of range R bursts at its highest point in two fragments, ...

    Text Solution

    |

  13. Two men of equal masses stand at opposite ends of the diameter of a tu...

    Text Solution

    |

  14. Two identical long, solid cylinders are used to conduct heat from temp...

    Text Solution

    |

  15. A force F acts tangentially at the highest point of a sphere f mass m ...

    Text Solution

    |

  16. A spherical drop of water as 1mm radius. If the surface tension of the...

    Text Solution

    |

  17. A sphere of mass m and radius r is projected in a gravity free space w...

    Text Solution

    |

  18. A ring of diameter 1m is rotating with an angular momentum of 10 Joule...

    Text Solution

    |

  19. A rod of length 1m is sliding in a corner as shown. At an instant when...

    Text Solution

    |

  20. A point charge placed on the axis of a uniformly charged disc experien...

    Text Solution

    |