Home
Class 12
PHYSICS
A torque of 100 Nm acting on a wheel at ...

A torque of 100 Nm acting on a wheel at rest, rotates it through 200 radians in 10 s. The angular acceleration of the wheel, in `rad//s^(2)` is

A

2

B

4

C

1

D

8

Text Solution

Verified by Experts

The correct Answer is:
B

`theta = omega_(1) t+(1)/(2)alpha t^(2)`
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

A torque of 50 N-m acting on a wheel at rest rotates it through 200 rad in 5 sec. Its angular acceleration is -

A torque of 100 N-m acting on a wheel at rest, rotates it through 200 radian in 10 s. What is the moment of inertia of the wheel?

On the application of a constant torque , a wheel is turned from rest through 400 radians in 10 s. The angular acceleration is :

On applying a consatnt torque, a wheel at rest, turns through 400 radian in 10 s . Find angular acceleration. If same torque continues to act, what will be angular veclocity of the wheel after 20 s from stars ?

The speed of the wheel of an engine changes from 600 rpm to 1200 rpm in 5 s. Then its angular acceleration in rad//s^(2)

On application of a constant torque, a wheel is turned from rest through an angle of 200 radius in 8 s . What is its angular acceleration ? If the same torque continues to act, what will be the angular velocity of the wheel 16 s from the start ?

A constant torque is acting on a wheel. If starting from rest, the wheel makes n rotations in t seconds, show that the angular acceleration is given by alpha = (4pi n)/(t^(2)) rad s^(-2) .

A constant torque of 31.4 Nm is applied to a pivoted wheel. If the angular acceleration of the wheel is 2pi" rad/s"^(2) , then its moment of inertia is

A wheel is turned from rest through 500 radians in 20 s by applying a constant torque. (a) Calculate the angular acceleration of wheel (b) ind the angular velocity of the wheel after 40s from start if its angular acceleration is same.

A constant torque of 31.4 N-m id exterted on a pivoted wheel. If the angular acceleration of the wheel is 4 pi rad//s^2 , then the moment of inertia will be.

NIKITA PUBLICATION-ROTATIONAL MOTION -MULTIPLE CHOICE QUESTIONS
  1. A disc of radius 10 cm can rotate about an axis passing through its ce...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. A wheel of mass 40 kg and radius of gyration 0.5 m comes to rest from ...

    Text Solution

    |

  6. A motor running at a rate of 1000 rpm can supply torque of 60 Nm, then...

    Text Solution

    |

  7. If a motor running at a rate of 1200 revolutions per minute can supply...

    Text Solution

    |

  8. A rope is wound round a hollow cylinder of mass M and radius R. If the...

    Text Solution

    |

  9. A wheel of moment of inertia 2.0 xx 10^3 kgm^2 is rotating at uniform ...

    Text Solution

    |

  10. Starting from rest, a fan takes five seconds to attain the maximum spe...

    Text Solution

    |

  11. If I(x) and I(y) are moment of inertia of the lamina in the plane and ...

    Text Solution

    |

  12. Two flywheels of the same mass have radius R and r where R gt r, and t...

    Text Solution

    |

  13. If all a sudden the radius of the earth increases, then

    Text Solution

    |

  14. A person can balance easily on a moving bisycle but cannot balance on ...

    Text Solution

    |

  15. If the torque acting on a system is zero then, which of the followin q...

    Text Solution

    |

  16. If a gymnast sitting on a rotating disc with his arms out stretched su...

    Text Solution

    |

  17. A particle moves with a constant velocity parallel to the X-axis. Its ...

    Text Solution

    |

  18. When a mass is rotating in a plane about a fixed point, its angular mo...

    Text Solution

    |

  19. A person is standing on a rotating wheel. If the sits on the wheel, th...

    Text Solution

    |

  20. A man stands at the centre of turn table and the turn table is rotatin...

    Text Solution

    |