Home
Class 12
PHYSICS
A boy is sitting on a horizontal platfor...

A boy is sitting on a horizontal platform in the shape of a disc at a distance of 5m from its centre. The boy begins to slip when the speed of wheel exceeds 10 rpm. The coefficient of friction between the boy and platform is: `(g = 10 ms^(-2))`

A

`pi^2//6`

B

`pi^2//18`

C

`pi//6`

D

`pi//2`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise MOTION IN A PLANE|79 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos

  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos

Similar Questions

Explore conceptually related problems

A block of mass 10kg pushed by a force F on a horizontal rough plane moves with an acceleration of 5ms^(-2) . When force is doubled, its acceleration becomes 18 ms^(-2) Find the coefficient of friction between the block and rough horizontal plane. (g = 10 ms^(-2)) .

A block is placed on a horizontal platform.. The system is making horizontal oscillations about a fixed point with a frequency of 0.5Hz . Find the maximum amplitude of oscillation if the block is not to slide on the horizontal platform? (Coefficient of friction between the block and the platform=0.2) (g=10ms^(-2))

AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
  1. A block is gently placed on a conveyor belt moving horizontally with c...

    Text Solution

    |

  2. A body of mass 8kg is in limiting equilibrium over an inclined plane o...

    Text Solution

    |

  3. A boy is sitting on a horizontal platform in the shape of a disc at a ...

    Text Solution

    |

  4. An aeroplane of mass M requires a speed v for take off. The length of ...

    Text Solution

    |

  5. A vehicle of mass 500 kg is moving with a velocity of 15ms^(-1). It is...

    Text Solution

    |

  6. A wooden block of mass M resting on a rough horizontal surface is pull...

    Text Solution

    |

  7. A 2kg block is placed over a 4kg block and both are placed on a smooth...

    Text Solution

    |

  8. A 4g bullet is fired horizontally with a speed of 300 m/s into 0.8kg b...

    Text Solution

    |

  9. A car of mass 1000 kg is moving at a speed pf 30 m/s. Brakes are appli...

    Text Solution

    |

  10. A block of weight W rests on horizontal floor with coefficient of stat...

    Text Solution

    |

  11. A block A of mass 4 kg is placed on another block B of mass 5 kg, and ...

    Text Solution

    |

  12. A particle of mass mis acted upon by a force F given by the empirical ...

    Text Solution

    |

  13. A person stands in contact against a wall of cylindrical drum of radiu...

    Text Solution

    |

  14. A grinding machine whose wheel has a radius of 1/(pi) is rotating at 2...

    Text Solution

    |

  15. A block is  pushed up a rough inclined plane of 45^(@) with a velocity...

    Text Solution

    |

  16. A body is released from the top of a smooth inclined plane of inclinat...

    Text Solution

    |

  17. A body is sliding down an inclined plane having coefficient of frictio...

    Text Solution

    |

  18. A body is sliding down a rough inclined plane. The coefficient of fric...

    Text Solution

    |

  19. Sand is pilled up on a horizontal ground in the form of a regular cone...

    Text Solution

    |

  20. A box of mass 8 Kg is placed on a rough inclined plane of inclination ...

    Text Solution

    |