Home
Class 12
PHYSICS
A rigid body is rotating about a vertica...

A rigid body is rotating about a vertical axis. In `t` second, the axis gradually becomes horizontal. But the rigid body continues to make `v` rotations per second throughout the time interval of `t` second. If the moment of inertia `I` of the body about the axis of rotation can be taken as constant, then the torque acting on the body is

A

zero

B

`(2pi nI)/(60t)`

C

`(2sqrt(2)pi nI)/(60t)`

D

`(4pi n I)/(60t)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise EFFICIENT|50 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|56 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|56 Videos

  • SYSTEM OF A PARTICLES & ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE F|10 Videos

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - B|10 Videos

Similar Questions

Explore conceptually related problems

A rigid body is rotating about a vertical axis. In t second, the axis gradually becomes horizontal. But the rigid body continues to make v rotations per second throughout the time interval of 1 second. If the moment of inertia I of the body about the axis of rotation can he taken as constant, then the torque acting on the body is

The moment of inertia of a body about a given axis of rotation depends upon :-

A rigid body is rotating. Is it necessary that a net torque acts on the body is zero ?

A wheel rotating at an angular speed of 20 rad/s is brought to rest by a constant torque in 4.0 seconds. If the moment of inertia of the wheel about the axis of rotation is 0.20 kg-m^2 find the work done by the torque in the first two seconds.

A body is rotating with angular momentum L. If I is its moment of inertia about the axis of rotation is I, its kinetic energy of rotation is

A body is rotating uniformly about a vertical axis fixed in an inertial frame. The resultant force on a particle of the body not on axis is

A uniform rod of mass m and length l_(0) is rotating with a constant angular speed omega about a vertical axis passing through its point of suspension. Find the moment of inertia of the rod about the axis of rotation if it make an angle theta to the vertical (axis of rotation).

When the axis of rotation of a body changes does moment of inertia also change ? Why ?

A flywheel is making (3000)/(pi) revolutions per minute about its axis. If the moment of inertia of the flywheel about that axis is 400 kgm^(2) , its rotational kinetic energy is :

In the figure shown ABCD is a lamina of mass 12 kg . The moment of inertia of the given body about an axis passing through D, and perpendicular to the plane of the body is

VMC MODULES ENGLISH-SYSTEM OF PARTICLES AND ROTATIONAL MOTION-ENABLE
  1. Four particles of masses m(1) = 2m , m(2) = 4 m , m(3) = m and m(4) ...

    Text Solution

    |

  2. Two blocks A and B of equal masses are attached to a string passing ov...

    Text Solution

    |

  3. A rigid body is rotating about a vertical axis. In t second, the axis ...

    Text Solution

    |

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

    Text Solution

    |

  5. When different regular bodies roll down along an inclined plane from r...

    Text Solution

    |

  6. A string is wrapped around a cylinder of mass M and radius R. The stri...

    Text Solution

    |

  7. A small ball of radius r rolls without sliding in a big hemispherical ...

    Text Solution

    |

  8. A solid sphere rests on a horizontal surface. A horizontal impulse is ...

    Text Solution

    |

  9. A wheel of moment of inertia I and radius r is free to rotate about it...

    Text Solution

    |

  10. In the following figure, a body of mass m is tied at one end of a ligh...

    Text Solution

    |

  11. Three rings each of mass M and radius R are arranged according to the ...

    Text Solution

    |

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

    Text Solution

    |

  13. A tube of length L is filled completely with an incompressible liquid ...

    Text Solution

    |

  14. A wheel is rolling uniformly along a level road (see figure). The spee...

    Text Solution

    |

  15. Two masses of 3kg and 5kg are placed at 20 cm and 70cm marks respectiv...

    Text Solution

    |

  16. A rod of mass 3 kg and of length 3m is bent in the form of an equilate...

    Text Solution

    |

  17. A ring of mass m and radius R has three particles attached to the ring...

    Text Solution

    |

  18. The distance of the centre of mass of T-shaped uniform plate from O is...

    Text Solution

    |

  19. Two uniform rods of equal length but different masses are rigidly join...

    Text Solution

    |

  20. A uniform rod of length L is free to rotate in a vertical plane about ...

    Text Solution

    |