Home
Class 12
PHYSICS
A grinding wheel attained a velocity of ...

A grinding wheel attained a velocity of 20 rad/sec in 5 sec starting from rest. Find the number of revolutions made by the wheel.

A

`(pi)/(25)` revolution per sec

B

`(1)/(pi)` revolution per sec

C

`(25)/(pi)` revolution

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    MOTION|Exercise EXERCISE - 2|16 Videos
  • CIRCULAR MOTION

    MOTION|Exercise EXERCISE - 3 SECTION -A|14 Videos
  • CIRCULAR MOTION

    MOTION|Exercise EXERCISE - 4|16 Videos
  • CENTRE OF MASS

    MOTION|Exercise Exercise - 4 Level-II|20 Videos
  • COMMUNICATION SYSTEM

    MOTION|Exercise EXERCISE - 3|6 Videos

Similar Questions

Explore conceptually related problems

The angular velocity of a wheel increases from 100 to 300 in 10 s. The number of revolutions made during that time is

The angular velocity of a wheel increases from 120 to 480 rpm in 10 s .The number of revolutions made during this time is

A wheel of a bicycle is rotating about its axis with an angular velocity of 100 rpm. When the brakes are applied, the wheel comes to rest in 10 s. Calculate the number of revolutions made by the wheel before coming to rest. Assume that the deceleration is constant.

The diameters of the fron and rear wheels of a tractor are 80 cm and 2 m respectively. Find the number of revolutions that a rear wheel makes to cover the distance which the front wheel covers is 800 revolutions.

The diameters of front and rear wheels of a tractor are 80 cm and 2m, respectively. Find the number of revolutions that rear wheel will make in covering a distance in which the front wheel makes 1400 revolutions .

The diameters of front and rear wheels of a tractor are 80cm and 2m respectively.Find the number of revolutions that rear wheel will make in covering a distance in which the front wheel makes 1400 revolutions.

A wheel rotating at a speed of 120 rpm about its axis is brought to rest by applying a constant torque for 4 s . Find the number of revolutions completed by the wheel before stop.

The angular velocity of a wheel rotating with constant angular acceleration, changes from 2 rad/s to 6 rad/s in a time interval of 31.4 s. The number of rotations made by the wheel in this interval of time is

A stationary wheel starts rotating about its own axis at an angular acceleration 5.5 rad//s^(2) . To acquire an angular velocity 420 revolutions per minute , the number of rotations made by the wheel is

MOTION-CIRCULAR MOTION-EXERCISE -1
  1. A wheel is subjected to uniform angular acceleration about its axis. I...

    Text Solution

    |

  2. The linear and angular acceleration of a particle are 10 m/"sec"^(2) a...

    Text Solution

    |

  3. A grinding wheel attained a velocity of 20 rad/sec in 5 sec starting f...

    Text Solution

    |

  4. A wheel starts rotating at 10 rad/sec and attains the angular velocity...

    Text Solution

    |

  5. A stone of mass m is tied to a string of length l and rotated in a cir...

    Text Solution

    |

  6. In uniform circular motion

    Text Solution

    |

  7. A particle completes 3 revolutions per second on a circular path of ra...

    Text Solution

    |

  8. A particle is moving along a circular path of radius 6 m with uniform ...

    Text Solution

    |

  9. The earth, radius 6400 km, makes one revolution about its own axis in ...

    Text Solution

    |

  10. A car is travelling with linear velocity v on a circular road of radiu...

    Text Solution

    |

  11. A spot light S rotates in a horizontal plane with a constant angular v...

    Text Solution

    |

  12. Two moving particles P and Q are 10 m apart at a certain instatn. The ...

    Text Solution

    |

  13. If the radius of curvature of the path of two particles of same masses...

    Text Solution

    |

  14. What happens to the centripetal acceleration of a revolving body if yo...

    Text Solution

    |

  15. If the speed of a body in uniform circular motion and radius of circul...

    Text Solution

    |

  16. A stone of mass 0.5 kg tied with a string of length 1 metre is moving ...

    Text Solution

    |

  17. The breaking tension of a string is 10 N. A particle of mass 0.1 kg ti...

    Text Solution

    |

  18. A string of length 1 m is fixed at one end and carries a mass of 100 g...

    Text Solution

    |

  19. A particle is acted upon by a force of constant magnitude which is alw...

    Text Solution

    |

  20. A particle is acted upon by a constant force always normal to the dire...

    Text Solution

    |