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Asked by brijk456 | 04 Sep, 2019, 11:50: PM
answered-by-expert Expert Answer
Power P of a wave propagation in stretched string is given by,
 
P = (1/2)μω2 A2 v  .........................(1)
 
where μ = linear mass density ( kg/m )
ω = angular frequency (rad/s)
A = amplitude (m)
v = speed of wave (m/s)
 
Speed of wave in stretched string ,  v = ( T/μ )1/2   or  μ = ( T / v2 )  ......................(2)
 
Substituting for μ using eqn.(2), eqn.(1) for power is rewritten as,  P = (1/2) ( T / v22 A2 v = ( ω2 A2 T) / (2v)
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