Sinusoidal waves 5 mm in amplitude are to be transmitted along a string having a linear mass density equal to 4 10⁻² ~kg / m . If the source can deliver an average power of 90 W and the string is under a tension of 100 N , then find the fre

Question

Sinusoidal waves 5 mm in amplitude are to be transmitted along a string having a linear mass density equal to 4 10⁻² ~kg / m . If the source can deliver an average power of 90 W and the string is under a tension of 100 N , then find the frequency (in Hz ) at which the source can operate. ( . take . ^2=10 ):

Quantrex Academy · Accepted Answer

Correct answer: 300

P=T ( y t ) ( y x ) ; y=A ( t-k x+ ) |P_ evg |= 1 2 T A^2 K= 1 2 T A^2 ^2= 1 2 T A^2(2 f)^2 f=300 H z

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