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Equation of travelling wave on a stertch...

Equation of travelling wave on a stertched string of linear density `5 g // m` is y=00.3 sin (450 t - 9 x) where distance and time are measured in SI units. The tension in the string is

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We have given
`y=0.03sin(450t-9x)`
Comparing it with standard equation of wave, we get
`omega=450k=9`
`:.v=(omega)/k=450/9=50m//s`
velocity of travelling wave on a stretched string is given by
`v=sqrt(T/(mu))impliesT/(mu)=2500`
`mu=` linear mass density
`impliesT=2500xx5xx10^(-3)`
`implies12.5N`
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