Home
Class 12
PHYSICS
The moment of inertia of a flywheel is 4...

The moment of inertia of a flywheel is `4 kg m^(2)`. What angular acceleration will be produced in it by applying a torque of 10 Nm on it?

A

`4 rad//s^(2)`

B

`0.25 rad//s^(2)`

C

`25 rad//s^(2)`

D

`2.5 rad//s^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`tau = I alpha`
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER - MH-CET 2018

    NIKITA PUBLICATION|Exercise MCQ|50 Videos

  • SEMICONDUCTORS

    NIKITA PUBLICATION|Exercise MCQS|350 Videos

Similar Questions

Explore conceptually related problems

The moment of inertia of a body is 2.5 kg m^(2) . Calculate the torque required to produce an angular acceleration of 18 rad s^(-2) in the body.

The moment of inertia of a solid flywheel about its axis is 0.1 kg-m^(2) .A tangential force of 2 kg-wt. is applied round the circumference of the flywheel with the help of a string and mass arrangement as shown in the figure. If the radius of the wheel is 0.1 m, find the acceleration ("in rad/sec"^(2)) of the mass :

The moment of inertia of a wheel is 1000 kg-m^(2) . At a given instant, its angular velocity is 10 rad//s . After the wheel rotates through an angle of 100 radians the wheel's angular velocity is 100 rad//s . Find the torque applied on wheel.

A flywheel having moment of inertia 20kgm^(2) rotates about its axis with an angular velocity of 100rads^(-1) . If the moment of inertia of the flywheel is reduced to 10kgm^(2) without applying external torque, calculate the new angular velocity of the Flywheel.

A wheel of radius 0.4m can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of 4 kg is hung. An angular acceleration of 8 rad//s^(2) is produced in it due to the torque. Then, the moment of inertia of the wheel is ( g=10m//s^(2) )

A wheel whose moment of inertia is 10kgm^(2) has an initial angular velocity of 20 rad//s . A constant torque of 20 Nm acts on the wheel. The time in which wheel is acceleration to 100 rad//s is

A flywheel is rotating at an angular speed of 150 rpm. If the moment of inertia of the flywheel somehow decreases from 10kgm^(2) to 4kgm^(2) , then what will be the new angular speed of the flywheel?

NIKITA PUBLICATION-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS
  1. A fly wheel of M.I. 0.32 kg m^(2) is rotated steadily at 120 rad/s by ...

    Text Solution

    |

  2. A flywheel revolves at 100 rev/min, a torque is applied to the flywhee...

    Text Solution

    |

  3. The moment of inertia of a flywheel is 4 kg m^(2). What angular accele...

    Text Solution

    |

  4. If a wheel has mass 70 kg and radius of gyration 1 m, then the torque ...

    Text Solution

    |

  5. 8 kg wheel has radius of gyration (1/4) m. The torque required to give...

    Text Solution

    |

  6. A disc of moment of inertia 3 kg m^(2) is acted upon by a constant tor...

    Text Solution

    |

  7. A solid cylinder of radius 0.5 m and mass 50 kg is rotating at 300 rpm...

    Text Solution

    |

  8. Two rigid bodies have the same angular momentum about their axes of sy...

    Text Solution

    |

  9. A disc of mass 16 kg and radius 25 cm is rotated about its axis. What ...

    Text Solution

    |

  10. If a torque of magnitude 100 Nm acting on a rigid body produces an ang...

    Text Solution

    |

  11. A disc of moment of inertia 2 kg m^(2) is acted upon by a constant tor...

    Text Solution

    |

  12. A shaft rotating at 6000 rpm is transmitting a power of 2pi kilowatt. ...

    Text Solution

    |

  13. A wheel with moment of inertia 10 kg m^(2) is rotating at (2//pi) rps ...

    Text Solution

    |

  14. A fly wheel is rotating with a kinetic energy of 200 J. A constant tor...

    Text Solution

    |

  15. An automobile egine develops 60 pi kilowatt of power when it is rotati...

    Text Solution

    |

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

    Text Solution

    |

  17. A disc of radius 10 cm can rotate about an axis passing through its ce...

    Text Solution

    |

  18. A wheel of mass 40 kg and radius of gyrating 0.5 m comes to rest from ...

    Text Solution

    |

  19. A torque of 100 Nm acting on a wheel at rest, rotates it through 200 r...

    Text Solution

    |

  20. A disc of mass 2 kg and diameter 40 cm is free to rotate about an axis...

    Text Solution

    |