Home
Class 11
PHYSICS
when a metal wire elongates by hanging a...

when a metal wire elongates by hanging a load Mg on it , the gravitational poyential energy of mass M decreases by Mgl. This energy appears

A

as elastic potential energy completely

B

as thermal energy completely

C

half as potential energy and half as thermal energy

D

as kinetic energy of the load completely

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    DC PANDEY ENGLISH|Exercise Match the columns|4 Videos

  • ELASTICITY

    DC PANDEY ENGLISH|Exercise Medical entrances s gallery|21 Videos

  • ELASTICITY

    DC PANDEY ENGLISH|Exercise Check point 12.3|15 Videos

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise All Questions|469 Videos

  • ELECTROSTATICS

    DC PANDEY ENGLISH|Exercise Integer|17 Videos

Similar Questions

Explore conceptually related problems

When a metal wire elongates by hanging a load on it, the gravitational potential energy is decreased.

When a block of mass M is suspended by a long wire of length L, the elastic potential energy stored in the wire is 1/2xxstressxx strain xxvolume . Show that it is equal to 1/2Mgl where l is the extension. The loss in gravitational potential energy of the mass earth system is Mgl. Where does the remaining 1/2Mgl energy go ?

A body of mass M is attached to lower end of a metal wire whose upper End is fixed. The elongation is l. The ratio of loss of gravitational potential energy to the energy stored in the wire is

If the gravitational potential energy of two point masses infintely away is taken to be zero then gravitational potential energy of a galaxy is

A uniform chain of mass m and length l is lying on a horizontal table with one-third of its length hanging over the edge of the table. If a gentle push is given to hanging end, it will start moving down. What is the change in gravitational potential energy of the chain, as it just leaves the table?

Assertion : When two masses come closer, their gravitational potential energy decreases. Reason : In moving attract each other.

A boy has a mass of 55 kg. He climbs 10 m up a tree. What is his gravitational potential energy?

The ionisation energy of alkali metals decreases from Li to Cs bacause

A body (initially at rest is falling under gravity. When it loses a gravitational potential energy by U , its speed is v . The mass of the body shall be :

The height from the surface of earth at which the gravitational potential energy of a ball of mass m is half of that at the centre of earth is (where R is the radius of earth)

DC PANDEY ENGLISH-ELASTICITY-Chapter Exercise
  1. The longitudinal extention of any elastic material is very small.In or...

    Text Solution

    |

  2. The maximum load that a wire can sustain is W. If the wire is cut to h...

    Text Solution

    |

  3. when a metal wire elongates by hanging a load Mg on it , the gravitati...

    Text Solution

    |

  4. A ball falling in a lake of depth 200m shown 0.1% decrease in its volu...

    Text Solution

    |

  5. A heavy mass is attached to a thin wire and is whirled in a vertical c...

    Text Solution

    |

  6. Two wires of copper having the length in the ratio 4 : 1 and their rad...

    Text Solution

    |

  7. The interatomic distance for a metal is 3 xx 10^(-10) m. If the intera...

    Text Solution

    |

  8. Young's modulus of rubber is 10^(4) N//m^(2) and area of cross section...

    Text Solution

    |

  9. Two wires of same diameter of the same material having the length l an...

    Text Solution

    |

  10. A force of 200 N is applied at one end of a wire of length 2m and havi...

    Text Solution

    |

  11. A beam of electrons moving with a momentum p enters a uniform magnetic...

    Text Solution

    |

  12. The temperature of a wire of length 1 metre and area of cross-section ...

    Text Solution

    |

  13. Calculate the apprroximate change in density of water in a lake at a d...

    Text Solution

    |

  14. A load suspended by a massless spring produces an extention of xcm in ...

    Text Solution

    |

  15. A steal wire of cross-section area 3xx10^(-6) m^(2) can withstand a m...

    Text Solution

    |

  16. The load versus elongation graph for four wires of the same material i...

    Text Solution

    |

  17. Two wires of the same material and length but diameter in the ratic 1:...

    Text Solution

    |

  18. A stress of 10^(6) N//m^(2) is required for breaking a material. If t...

    Text Solution

    |

  19. A cable is replaced by another cable of the same length and material b...

    Text Solution

    |

  20. A uniform steel rod of cross- sectional area A and L is suspended so t...

    Text Solution

    |