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A wire suspended vertically from one of ...

A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end.The weight stretches the wire by 1 mm. Then the energy stored in the wire is

A

0.2 J

B

10J

C

20J

D

0.1J

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Energy of a stretched wire is

    A
    half of load ` xx` strain
    B
    load `xx` strain
    C
    stress `xx` strain
    D
    half of stress ` xx` strain

  • A wire is stretched by one mm by a force of 1 kN. The work done is stretching the wire is

    A
    5 ergs
    B
    5 Joules
    C
    0.5 ergs
    D
    0.5 Joules

  • On stretching a wire, the elastic energy stored per unit volume is,

    A
    F dl/2 Al
    B
    F A/2l
    C
    Fl/2A
    D
    F l/2

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