What are (a) the lowest frequency (b) the scond lowest frequency and (c) the third lowest frequency for standing waves on a wire that is `10.0 m` long

Monjur Alahi

What are (a) the lowest frequency (b) the scond lowest frequency and (c) the third lowest frequency for standing waves on a wire that is `10.0 m` long has a mass of `100 g` and is stretched under a tension of `25 N` which is fixed at both ends?


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Salim Ahmed Kawsar

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Correct Answer - (a) `2.5 Hz;` , (b) `5 Hz` , (c) `7.5 Hz`.
`v = sqrt((T)/(mu)) = sqrt((25)/((100 xx 10^(3))/(10))) = 50`
`:. V_(0) = (v)/(2L) = (50)/(2 xx 10) = 2.5 Hz :. V_(1) = 2v_(0) = 5 Hz`
`v_(2) = 3v_(0) = 7.5 Hz`.

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