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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

A

wavelength, frequency and speed of progressive wave are 3m , 60 Hz and 180 m/s respectively .

B

tension in the string is 648 N

C

amplitude at a distance x=0.375 m is 4.2 cm

D

wavelength , frequency and speed of progressive wave are 3m ,80 Hz and 240 m/s

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