Home
Class 11
PHYSICS
A wire suspended vertically stretches by...

A wire suspended vertically stretches by 1mm. when mass of 20 kg is attracted to the lower end . What is the energy gained by the wire ? Take g=`10ms^-2`.

A

0.05 J

B

0.1 J

C

0.2 J

D

0.4 J

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    PATHFINDER|Exercise QUESTION BANK|127 Videos

  • GRAVITATION

    PATHFINDER|Exercise QUESTION BANK|222 Videos

Similar Questions

Explore conceptually related problems

A straight horizontal conducrting rod of length 0.45m and mass 60g is suspended by two vertical wires at its ends. A current of 5.0A is set up in the rod through the wires. What will be the total tension in the wires the direction of current is reversed keeping the magnetic field the same as before ? (Ignor the mass of th wires g=9.8 m*s^(-2) .

A body of mass 5kg initially at rest is subjected to a force of 20N. What is the kinetic energy acquired by the body at the end of 10s?

An 8kg mass is suspended from one end of an iron wire of length 2 m and diameter 1mm. IF the young's modulus of iron is 2 times 10^12 dyn. cm^-2 , then what is the increase in length of the wire? [ g=980 cm.s^-2 ]

PATHFINDER-ELASTICITY-QUESTION BANK
  1. What is the ratio between the energy gained by the wire in Q.4 and the...

    Text Solution

    |

  2. The normal density of gold is rho and its bulk modulus is K . The incr...

    Text Solution

    |

  3. A wire suspended vertically stretches by 1mm. when mass of 20 kg is at...

    Text Solution

    |

  4. A wire of length L and cross sectional area A is made of a material of...

    Text Solution

    |

  5. A solid sphere of radius R and made of a material of bulk modulus K is...

    Text Solution

    |

  6. Artificial diamonds are made by subjecting graphite to a high pressure...

    Text Solution

    |

  7. The density of water at the surface of the ocean is rho . If the bulk ...

    Text Solution

    |

  8. One end of a uniform rod of mass M and cross sectional area A is suspe...

    Text Solution

    |

  9. A uniform wire of cross-sectional area A and Young's modulus Y is stre...

    Text Solution

    |

  10. One end of a uniform wire of length L and of weight W is attached rigi...

    Text Solution

    |

  11. An elastic spring of unstretched length L and force constant K is stre...

    Text Solution

    |

  12. What is the dimension of stress ?

    Text Solution

    |

  13. A rubber cord of cross-sectional area 2cm^2 has a length of 1m. When a...

    Text Solution

    |

  14. Two wires A and B of the same material have their lengths in the ratio...

    Text Solution

    |

  15. A metal bar of length L and area of cross-sectional A is rigidly clamp...

    Text Solution

    |

  16. The Poisson's ratio of a substance is defined

    Text Solution

    |

  17. Two strings of equal lengths and equal cross-sectional area are made o...

    Text Solution

    |

  18. A steel wire of cross-sectional area 3.0xx10^-5m^-2 stretches by the s...

    Text Solution

    |

  19. A uniform wire (Young's modulus 2xx10^11 Nm^-2) is subjected to a long...

    Text Solution

    |

  20. The length of an elastic string is 'a ' meter when the longitudinal t...

    Text Solution

    |