Home
Class 12
PHYSICS
If a body of mass 0.1 kg tied with a str...

If a body of mass 0.1 kg tied with a string of length 1 m, is rotated in vertical circle, then the energy of the body at the highesst position will be `(g=9.8 m//s)`

A

`2.45 j`

B

`1.25 j`

C

`3.45 j`

D

`4.45 j`

Text Solution

Verified by Experts

The correct Answer is:
A
`E=(5)/(2) mgr=(5)/(2)xx0.1xx9.8xx1`
`=0.98xx2.5=2.45`
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 body of mass 100 gram is tied at the end of a string of length 1m. It is rotated in a vertical circle at a critical speed of 4 m/s at the highest point . The tension in the string at the huighest point in its path is [ take g=10 m//s^(2) ]

A body of mass m is tied to a string of length l and whirled in a verticle cirlce. The velocity of the body at the lowest position is u. Then the tension in the string at a position when the string makes an angle theta with the vertical is

A child revolves a stone of mass 0 .5 kg tied to the end of a string of length 40 cmin a vertical circle . The speed of the stone at the lowest point of the circle is 3 m//s Calculate tension in the string at this point.

A body tied at the end of a string of length ' l' is rotated on a vertical circle. The velocity of the body at the highest point is sqrt(2gl) .The maximum velocity of the body would be

A mass of 5 kg is tied to a string of length 1.0 m is rotated in vertical circle with a uniform speed of 4 m//s . The tension in the string will be 170 N when the mass is at (g=10 m//s^(2))

A mass of 5 kg is tied to a string of length 1.0 m and is rotated in vertical circle with a uniform speed of 4m//s . The tension in the string will be 130 N when the mass is at (g= 10 m//s^2 )

A stone of mass 1 kg tied at the end of a string of length 1 m and is whirled in a verticle circle at a constant speed of 3 ms^(-1) . The tension in the string will be 19 N when the stone is (g=10 ms^(-1))

A stone of mass 5 kg, tied to one end of a rope of length 0.8m , is whirled in vertical circle. Find the minimum velocity at the highest point and at the midway point [g=9.8m//s^(2) ]

A body of mass 0.1 Kg attached at the end of a string 6m long , is whirled in a vertical circle . The tension in the string is 6.4 N at the lowest point . What is the maximum angular velocity the body ? (g=10 m//s^(2))

NIKITA PUBLICATION-CIRCULAR MOTION-Multiple Choice Question
  1. A body rest on the top of a hemisphere of radius R. What will be the l...

    Text Solution

    |

  2. In a well of death, motor cycle rides round the inner wall of a hollow...

    Text Solution

    |

  3. If a body of mass 0.1 kg tied with a string of length 1 m, is rotated ...

    Text Solution

    |

  4. A bucket full of water is tied at the end of rope of length 1.6 m. It ...

    Text Solution

    |

  5. A small body of mass m slide without friction from the top of a hemisp...

    Text Solution

    |

  6. A body of mass 2 kg attached to a cord and whirled in a verticle circl...

    Text Solution

    |

  7. A body of mass 0.5 kg is whirled in a verticle circle an angular frequ...

    Text Solution

    |

  8. A boy is deated on the top of a hemispherical mound of ice of radius R...

    Text Solution

    |

  9. A body of mass m is on the top point of a smooth hemisphere of radius ...

    Text Solution

    |

  10. A body of mass 4 kg is moved in a vertical circle with sufficient spee...

    Text Solution

    |

  11. The pilot of an aircraft, who is not tied to his seat, can loop a vert...

    Text Solution

    |

  12. A stone tied to a string of length L is whirled in a vertical circle w...

    Text Solution

    |

  13. The ratio of velocities at points A,B and C in vertical circular motio...

    Text Solution

    |

  14. A can filled with water is revolved in vertical circle of radius 16 m ...

    Text Solution

    |

  15. An object of mass 2 kg is whirled rround in a verticle circle of radiu...

    Text Solution

    |

  16. A small particle rest on the top of a hemisphere of radius 20 cm .The ...

    Text Solution

    |

  17. A mass of 2 kg tied to a string 1 m length is rotate in a verticle cir...

    Text Solution

    |

  18. A particle performs verticle circular motion along the circular path ....

    Text Solution

    |

  19. A body of mass m tied to a string of lrngth r is at its lowest positio...

    Text Solution

    |

  20. A mass m is hanging by a string of length l. The velocity v(0) which m...

    Text Solution

    |