Question

A taut string for which mass per unit length mu=5.0xx10^(-2)kg//m is under tension of 80N. How much power in watt upto one decimal points mus be supplied to the string to generate siusodial be supplied to the string to generate sinusoidal wave at a frequency of 6.0Hz and amplitude of 6.00cm

Answer 1

Answer:

Speed of waves in the string=μT=5×10−280=40m/s

ω=2πν=2×π×60Hz=377s−1

Power,P=21μω2A2v

=21×5×10−2×3772×0.062×40=512W