Question
Asked Nov 22, 2019
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An elastic cord vibrates with a frequency of 3.4 Hz when a mass of 0.64 kg is hung from it. What is its frequency if only 0.34 kg hangs from it? Express your answer using two significant figures.

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Expert Answer

Step 1

The frequency of the elastic cord is,

Since the frequency of two hanging mass of the cord is,

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k 1 2л \т k 1 2л\ т, k 1 fi 2л\т,

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Step 2

Divide the above two relation, to find the frequency of the second hanging mass of the cord.

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k 2π k 1 2л\ т, т, т, m2

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Step 3

Substitute the ...

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0.64kg 0.34kg (3.4Hz) 4.7Hz

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Science

Physics

Vibrations

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