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What are the frequencies heard when a st...

What are the frequencies heard when a stretched wire is plucked in the middle ?

A

resonant vibrations

B

natural vibrations

C

damped vibrations

D

forced vibrations.

Text Solution

Verified by Experts

The correct Answer is:
B
natural vibrations
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A steel wire is heated to 170^(@)C and held between two rigid supports which are 20cm apart. The wire is allowed to cool to a temperature of 29.6^(@)C . If the frequency of the note produced when the wire is plucked at the middle is 100 k , then find the value of k . (The density D of steel is 7.8xx10^(3)kg//m^(3) and for steel alpha=16xx10^(-6)K^(-1) and Y of steel =20xx10^(10)Pa .).

If a stretched string is plucked at the centre

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

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