The linear density of a vibrating string is $1.3 \times 10^{-4}\, kg/m.$ A transverse wave is propagating on the string and is described by the equation $Y = 0.021\, \sin (x + 30t)$ where $x$ and $y$ are measured in meter and $t$ in second the tension in the string is ..... $N$
Medium
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$v=\sqrt{\frac{T}{m}}=\frac{W}{K}$
$\sqrt{\frac{\mathrm{T}}{1.3 \times 10^{-4}}}=\frac{30}{1}$
$\Rightarrow \mathrm{T}=0.117 \mathrm{\,N}$
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