Home
Class 12
PHYSICS
A hollow sphere has radius 6.4 m. Minimu...

A hollow sphere has radius 6.4 m. Minimum velocity required by a motor cyclist at bottom to complete the circle will be.

A

`17.7 m//s`

B

`10.2 m//s`

C

`12.4`

D

`16.0 m//s`

Text Solution

Verified by Experts

The correct Answer is:
A

`v_(min)=sqrt(5gr)=17.7 m//s`
Promotional Banner

Topper's Solved these Questions

  • ATOMS, MOLECULES AND NUCLEI

    NIKITA PUBLICATION|Exercise MCQs|443 Videos
  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Examples for Practice)|8 Videos

Similar Questions

Explore conceptually related problems

A small sphere of mass m = 0.6 kg carrying a positive charge q = 80 muC is connected with a light, flexible, and inextensible string of length r = 30 cm and whirled in a vertical circle. If a horizontal rightward electric field of strength E = 10^5 NC^-1 exists in the space, calculate the minimum velocity of the sphere required at the highest point so that it may just complete the circle (g = 10 ms^-2) .

A mass m is tied to a string of length l and is rotated in a vertical circle with centre at the other end of the string. (a) Find the minimum velocity of the mass at the top of the circle so that it is able to complete the circle. (b) Find the minimum velocity at the bottom of the circle corresponding to the above condition.

A fighter plane is moving in a vertical circle of radius 'r'. Its minimum velocity at the highest point of the circle will be

A motor cyclist in a circus , drives in a vertical loop inside a death well . What is the minimum speed required to complete the vertical circle , without falling down to complete the vertical circle , without falling down at the highest point , if the radius of the death well is 5 m?

A hollow sphere of radius 1m is given a positive charge of 10µC. The electric field at the centre of hollow sphere will be :

In a circus , the diameter of globe of death is 20 m . From what minimum height must a motor cyclist start in order to go around the globe successfully ? .

A bucket of water is being removled in vertical circle of radius 1m. Minimum frequency required to prevent the water from getting down the path is

A motorcyclist rides in vertical circles in a hollow sphere of radius 5 m. Find the required minimum speed and minimum angular speed, so that he does not lose contact with the sphere at the highest point .

NIKITA PUBLICATION-CIRCULAR MOTION-Multiple Choice Question
  1. A body of mass m hangs at one end of a string of length l , the other ...

    Text Solution

    |

  2. The tension in the string revolving in a vertical circle with a mass ...

    Text Solution

    |

  3. A hollow sphere has radius 6.4 m. Minimum velocity required by a motor...

    Text Solution

    |

  4. A Particle is kept at rest at the top of a sphere of diameter 42m.when...

    Text Solution

    |

  5. A bucket full of water is revolved in vertical circle of radius 2 m . ...

    Text Solution

    |

  6. A body of mass m is rotated in a vertical circle with help of light st...

    Text Solution

    |

  7. A body of mass m is revolving along a vertical circle of radius r suc...

    Text Solution

    |

  8. A body of mass m is rotating in a verticle circle of diameter '2r' wit...

    Text Solution

    |

  9. A body of mass 'm' is rotated by means of a string along a verticle of...

    Text Solution

    |

  10. A stone of mass 1 kg tied at the end of a string of length 1 m and is ...

    Text Solution

    |

  11. When a ball tied to a string is swung along a vertical circle , quanti...

    Text Solution

    |

  12. A simple pendulum with a bob of mass 'm' swings with angular amplitude...

    Text Solution

    |

  13. A ball of mass 100 g released down an inclined plane describes a circl...

    Text Solution

    |

  14. A frictionless tracke ABCDE ends in a circular loop of radius 'r' A bo...

    Text Solution

    |

  15. The kinematical equation of motion are applied to solve the problems o...

    Text Solution

    |

  16. A wheel is subjected to uniform angular acceleration about its axis w...

    Text Solution

    |

  17. A wheel which is innitially at rest is subjected to an angular acceler...

    Text Solution

    |

  18. The angular velocity of a particle increases from O to omega as it com...

    Text Solution

    |

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

    Text Solution

    |

  20. A simple pendulum is suspended from the ceiling of a train which is mo...

    Text Solution

    |