Home
Class 11
PHYSICS
A stationary wheel starts rotating about...

A stationary wheel starts rotating about its own axis at constant angular acceleration. If the wheel completes `50` rotations in first `2` seconds, then the number of rotations mades by it in next two seconds is

A

`75`

B

`100`

C

`125`

D

`150`

Text Solution

Verified by Experts

The correct Answer is:
D
`theta=2pin,theta_(1)=2pin_(1),alpha=(2theta_(1))/t_(1)^(2)`
`theta_(2)=1/2alphat^(2),theta=theta_(2)-theta_(1),n=theta/(2pi)`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    NARAYNA|Exercise Level-II(H.W)|31 Videos

  • MOTION IN A PLANE

    NARAYNA|Exercise Level-Vi Integer|9 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-II (H.W)|24 Videos

  • MOTION IN A STRAIGHT LINE

    NARAYNA|Exercise Level 2 H.W|29 Videos

Similar Questions

Explore conceptually related problems

A stationary wheel starts rotating about its own axis at uniform rate amgular acceleration 8rad//s^(2) .The time taken by its to complete 77 rotation 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

The earth rotates about its own axis, then the value of acceleration due to gravity is

A disc, initially at rest, starts rotating about its own axis/ with a constant angular acceleration of 0*2 rad/s2. The time taken by the disc to rotate by 10 rad (in seconds) is

A circular disc is rotating about its own axis at constant angular acceleration. If its angular velocity increases from 210 rpm to 420 rpm during 21 rotations then the angular acceleration of disc is

A wheel is rotating about its axis at a constant angular velocity. If suddenly an object sticks to it on the rim, then its M.I. will:

A fly wheel is rotating about its own axis at an angular velocity 11 rad s^(-1) , its angular velocity in revolation per minute is

A wheel starting from rest,rotates with a uniform angular acceleration of 2rad/s^(2) .Then the number of rotations it performs in tenth second is

A wheel starts from rest and rotates with a constant angular acceleration. It rotates by angle theta_(1) in first second and by theta_(2) in another second. Then the ratio theta_(2)//theta_(1) is

NARAYNA-MOTION IN A PLANE-Level-I (H.W)
  1. A body is projected at angle 30^(@) to horizontal with a velocity 50 m...

    Text Solution

    |

  2. A body is projected with velocity 60m//s at 30^(@) to the horizontal.T...

    Text Solution

    |

  3. A body is projected with velocity u such that in horizontal range and ...

    Text Solution

    |

  4. A cricket ball is hit for a six leaving the bat at an angle of 60^(@) ...

    Text Solution

    |

  5. A bomb at rest is exploded and the pieces are scattered in all directi...

    Text Solution

    |

  6. A boy can throw a stone up to a maximum height of 10 m. The maximum h...

    Text Solution

    |

  7. A grass hopper can jump a maximum horizontal distance of 20 .4 cm . I...

    Text Solution

    |

  8. A stone is thrown with a velocity v at an angle theta with the horizon...

    Text Solution

    |

  9. A body is projected with a certain speed at angles of projection of th...

    Text Solution

    |

  10. The launching speed of a certain projectile is five times the speed it...

    Text Solution

    |

  11. A person throws a bottle into a dustbin at the same height as he is 2m...

    Text Solution

    |

  12. A body projected horizontally from the top of a tower follows y=20x^(2...

    Text Solution

    |

  13. A bomb is dropped from an aeroplane flying horizontally with a velocit...

    Text Solution

    |

  14. A body is projected horizontally from a height of 78.4 m with a veloci...

    Text Solution

    |

  15. Two thin wood screens A and B are separated by 200m a bullet travellin...

    Text Solution

    |

  16. A fly wheel is rotating about its own axis at an angular velocity 11 r...

    Text Solution

    |

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

    Text Solution

    |

  18. A point size body is moving along a circle at an angular velocity 2.8r...

    Text Solution

    |

  19. A circular plate is rotating about its own axis at an angular velocity...

    Text Solution

    |

  20. An air craft executes a horizontal loop of radius 1 km with steady sp...

    Text Solution

    |