Home
Class 11
PHYSICS
If a body is rotating, is it necessarily...

If a body is rotating, is it necessarily being acted by an external torque?

Text Solution

Verified by Experts

No, torque is required only for angular acceleration.
Promotional Banner

Topper's Solved these Questions

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (SHORT ANSWER QUESTIONS)|38 Videos

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (LONG ANSWER QUESTIONS)|20 Videos

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (MULTIPLE CHOICE QUESTIONS)|178 Videos

  • LAW OF MOTION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (VI Numerical Problems)|62 Videos

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (III. Short Answer Questions.)|24 Videos

Similar Questions

Explore conceptually related problems

If the resultant torque of all the forces acting on a body is zero about a point is it necessary that it will be zero about any other point?

The distance travelled by a moving body is directly proportional to time. Is any external force acting on it?

The magnitude and direction of the acceleration of a body are constant. Will the path of the body necessarily be a straight line ?

A jester in a circus is standing with his arms extended on a turntable rotating with angular velocity c. He brings his arms closer to his body so that his moment of inertia is reduced to one third of the original value. Find his new angular velocity [Given: There is no external torque on the turn table in the given situation.]

A disc is rotating with angular velocity (vecomega) .A force vecF acts at a point whose position vector with respect to the axis of rotation is vecr . The power associated with the torque due to the force is given by

PREMIERS PUBLISHERS-MOTION OF SYSTEM OF PARTICLES AND BODIES-OTHER IMPORTANT QUESTIONS & ANSWER (VERY SHORT ANSWER QUESTIONS)
  1. Does moment of inertia of a body change with the change of the axis of...

    Text Solution

    |

  2. If a body is rotating, is it necessarily being acted upon by an extern...

    Text Solution

    |

  3. On what factors does the turning effect of a force depend?

    Text Solution

    |

  4. A system is in stable equilibrium. What can we say about its potential...

    Text Solution

    |

  5. What effect does couple have on a body?

    Text Solution

    |

  6. Write an expression for mechanical advantage.

    Text Solution

    |

  7. Factors on which radius of gyration of the body depends.

    Text Solution

    |

  8. What is rolling motion?

    Text Solution

    |

  9. What do you mean by Rigid body?

    Text Solution

    |

  10. Should the centre of mass of a body necessarily lie inside the body?

    Text Solution

    |

  11. On what factors does the position of cm of a rigid body depend ?

    Text Solution

    |

  12. When an equation for velocity and acceleration of CM.

    Text Solution

    |

  13. Does the moment of inertia of a body change with the speed of rotatio...

    Text Solution

    |

  14. If a body is rotating, is it necessarily being acted by an external to...

    Text Solution

    |

  15. On what factors does the turning effect of a force depend?

    Text Solution

    |

  16. A system is in stable equilibrium. What can we say about its potential...

    Text Solution

    |

  17. What effect does couple have on a body?

    Text Solution

    |

  18. Write an expression for mechanical advantage.

    Text Solution

    |

  19. Factors on which radius of gyration of the body depends.

    Text Solution

    |

  20. What is rolling motion?

    Text Solution

    |