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Find speed of the wave generated in the ...

Find speed of the wave generated in the string as in the situation shown.
Assume that the cord is light

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`T = 20 xx 10 = 200 N `
`v = sqrt(( 200)/(0 . 5 )) = 20 m//s or phi = (pi)/(2) "rad"`
Therefore, the wave function is
`y = A sin (omega t - kx + (pi)/(2))`
` = 15 sin (16 pi 6 - (pi)/(20) x + (pi)/(2)) cm `
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