Home
Class 11
PHYSICS
A wheel is making revolutions about its ...

A wheel is making revolutions about its ais with unifrom angular acceleration. Starting from rest, ilt reaches 100 rev/sec in 4 seconds. Find the angular acceleration. Find the angle rotated during these four seconds.

A

`100 pi`

B

`200 pi`

C

`300 pi`

D

`400 pi`

Text Solution

Verified by Experts

The correct Answer is:
D
`omega = alphat & theta = 1/2 alphat^(2)`
Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise EXERCISE - II (C.W)|60 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise EXERCISE - II (H.W)|60 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise EXERCISE - I (C.W)|63 Videos

  • SYSTEM OF PARTICLES

    NARAYNA|Exercise Level-VI|78 Videos

  • THERMAL PROPERTIES OF MATTER

    NARAYNA|Exercise LEVEL - II (H.W.)|19 Videos

Similar Questions

Explore conceptually related problems

A body starts rotating from rest and completes 10 revolutions in 4 s .Find its angular acceleration

A body starts ratating from rest and completes 100 revolutions in 20 s. Find its angular acceleration

A wheel rotating wilth unifrom angular acceleration covers 50 revolutions in the first five seconds after the start. Find the angular acceleration and the angular velocity at the end of five seconds.

A wheel rotating with uniform acceleration covers 50 rev in the first five second after the start. Find the angular acceleration and the angular velocity at the end of five second.

A body starting from rest gains an angular speed of 540 r.p.m in 6 second. The angular acceleration of the body is

The wheel of a motor, accelerated uniformly from rest, rotates through 2.5 radian during the first second. Find the angle rotated during the next second.

A wheel rotates under constant angular acceleration starting from rest. Find the ratio of angle rotated in n second and n^(th) second .

An automobile engine starting from rest is given an angular acceleration of 20 rad //s ^(2) for 10 s .Find the angle turned during this period

A flywheel rotates with a uniform angular acceleration. Its angular speed increases from 2pirad//s to 10pirad//s in 4 s . Find the number of revolutions in this period.

The wheel of a car, accelerated uniformly from rest, rotates through 1.5 rad during the first second. Find the angle rotated during the next second.

NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - I(H.W)
  1. The angular displacement of a particle is given by theta = t^3 + 2t +1...

    Text Solution

    |

  2. A particle is moving with uniform speed 0.5 m//s along a circle of rad...

    Text Solution

    |

  3. A wheel is making revolutions about its ais with unifrom angular accel...

    Text Solution

    |

  4. The shaft of a motor car rotates at constant angular frequancy of 300...

    Text Solution

    |

  5. A particle P is moving in a circle of radius 'a' with a uniform ...

    Text Solution

    |

  6. Initial angular velocity of a wheel is 2 rad//s .It rotates with a co...

    Text Solution

    |

  7. A stationary wheel starts rotating about its own axis at constant angu...

    Text Solution

    |

  8. A disc of radius 0.1 m starts from rest with an angular acceleration o...

    Text Solution

    |

  9. Show that overset rarr(a). (overset rarr(b) xx overset rarr(c )) is eq...

    Text Solution

    |

  10. A force is applied on a door at point P making an angle theta wit...

    Text Solution

    |

  11. A meter scale weighs 50 gms and carries 20 gm at one end , the...

    Text Solution

    |

  12. A wire of mass m and length l is bent in the form of circular ring. Th...

    Text Solution

    |

  13. The radius of gyration of a body about an axis at a distance of 4cm fr...

    Text Solution

    |

  14. If I moment of inertia of a thin circular plate about an axis passing ...

    Text Solution

    |

  15. Moment of inertia of a hoop suspended from a peg about the peg is

    Text Solution

    |

  16. The moment of inertia of a solid sphere about an axis passing through ...

    Text Solution

    |

  17. The ratio of moments of inertia of solid sphere about axes passing thr...

    Text Solution

    |

  18. Three identical masses, each of mass 1kg, are placed at the corners of...

    Text Solution

    |

  19. The radius of gyration of a body about an axis at a distance of 4cm fr...

    Text Solution

    |

  20. The diameter of a flywheel is increased by 1% keeping the mass same. I...

    Text Solution

    |