A taut string for which $\;\mu=5\times 10^{-2} \;Kg/m\;$ is under as tension of 80 N . How much power must be supplied to the string to generate a sinusoidal wave at a frequency of 60 Hz and an amplitude of 6 cm ?

Question

$(a)\;512\;W\qquad(b)\;500\;W\qquad(c)\;640\;W\qquad(d)\;746\;W$