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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

A

12.5N

B

7.5N

C

10N

D

5N

Text Solution

Verified by Experts

The correct Answer is:
A
`k=9 , omega= 450 `
`:. v= omega/k = 50m//s`
`v = sqrt((T)/mu)`
`:.T = muv^2 = 50^2xx5xx10^(-3) = 12.5 N`.
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