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The transverse displacement of a string ...

The transverse displacement of a string clamped at its both ends is given by
`y(x, t) = 0.06 sin ((2pi)/3 x) cos(l20pit)` where x and y are in m and t in s. The length of the string is 1.5 m and its mass is `3 xx 10^(-2)` kg. The tension in the string is

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The correct Answer is:
(a) Stationary wave
(b) `l = 3 m, n = 60 Hz`, and `u = 180 m s^(-1)` for each wave
(c) `648 N`
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