Home
Class 11
PHYSICS
A constant torque acting on a uniform ci...

A constant torque acting on a uniform circular wheel changes its angluar momentum from `A_0` to `4 A_0` in `4 s`. The magnitude of this torque is equal to.

A

`(3 A_(0))/(4)`

B

`A_(0)`

C

`4A_(0)`

D

`12A_(0)`

Text Solution

Verified by Experts

Angular impulse `=` change in angular momentum
`tau Delta t=Delta Limplies tauxx4=4A_(0)-A_(0)`
`tau=(3A_(0))/(4)`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    CP SINGH|Exercise Exercise|172 Videos

  • RELATIVE MOTION

    CP SINGH|Exercise EXERCISE|33 Videos

  • SIMPLE HARMONIC MOTION

    CP SINGH|Exercise Exercises|125 Videos

Similar Questions

Explore conceptually related problems

A constant torque acting on a uniform circular wheel changes its angular momentum from A_(0) to 2A_(0) in 1s . The magnitude of this torque is

A constant torque acting on a uniform circular wheel changes its angular momentum from A_(0) to 4 A_(0) in 4 seconds. Find the magnitude of this torque.

A constant torque acting on a uniform circular wheel changes its angular momentum from A to 4A in 4sec . The torque acted on it is

A constant torque acting on a uniform circular wheel changes its angular momentum from A to 4A in 2 s .The torque acted on it is ?

A constant torque acting on a uniform circular wheel changes its angular momentum from 2A to 7A in 3S .The torque acted on it is ?

A constant torque acting on a uniform circular disc changes its angular mkomentum from L to 4L/3 in 2 seconds. Then the magnitude of the torque applied is

If there is change of angular momentum from 1 J to 4 J in 4 second, then the torque is

A body is acted upon by a constant torque . In 4 seconds its angular momentum changes from L to 4L . The magnitude of the torque is

A torque of 50 Nm acts on a rotating body for 5 s. Its angular momentum is

CP SINGH-ROTATIONAL MOTION-Exercise
  1. A uniform bar of length 6a and mass 8m lies on a smooth horizontal tab...

    Text Solution

    |

  2. A small mass m is attached to a massless string whose other end is fi...

    Text Solution

    |

  3. A constant torque acting on a uniform circular wheel changes its anglu...

    Text Solution

    |

  4. A thin rod of mass m and length 2L is made to rotate about an axis pas...

    Text Solution

    |

  5. A constant external torque tau acts for a very brief period Delta t on...

    Text Solution

    |

  6. The torque vec tau on a body about a given point is found to be equal ...

    Text Solution

    |

  7. A wheel rolls without slipping on a horizontal surface such that its v...

    Text Solution

    |

  8. A solid disc rolls clockwise without slipping over a horizontal path w...

    Text Solution

    |

  9. A disc is rolling (without slipping) on a horizontal surface. C is its...

    Text Solution

    |

  10. A sphere is rolling without slipping on a fixed horizontal plane surfa...

    Text Solution

    |

  11. A string of negligible thicknes is wrapped several times around a cyli...

    Text Solution

    |

  12. A ball rolls without slipping. The radius of gyration of the ball abou...

    Text Solution

    |

  13. A solid sphere of mass m and radius R rolls without slipping on a hori...

    Text Solution

    |

  14. A hollow sphere rolls without slipping on plane surface. The ratio of ...

    Text Solution

    |

  15. A solid cylinder and a sphere, having the same mass, rolls without sli...

    Text Solution

    |

  16. An annular ring with inner and outer radii R1 and R2 is rolling wihtou...

    Text Solution

    |

  17. A solid sphere is rolling on a frictionless surface, shown in figure w...

    Text Solution

    |

  18. A small object of uniform density rolls up a curved surface with an in...

    Text Solution

    |

  19. A disc of mass M and radius R is rolling with angular speed omega on a...

    Text Solution

    |

  20. A solid cylinder of mass M and radius R rolls without slipping down an...

    Text Solution

    |