«previous l 5of 15 | next roblem 15.19 Part A A small steel wire of diameter 1.3

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«previous l 5of 15 | next roblem 15.19 Part A A small steel wire of diameter 1.3 mm is connected to an oscillator and is under a tension of 65 N The frequency of the oscillator is 55.0 Hz and it is observed that the amplitude of the wave on the steel wire is 0.56 em What is the power output of the oscilator, assuming that the wave is not reflected back? Express your answer using two significant figures Submit My Answers Give Up Incorrect; Try Again; 9 attempts remaining Part B If the power output stays constant but the frequency is doubled what is the Express your answer using two significant figures Submit My Answers Give Up Continue

Explanation / Answer

V = M/ >>> L A = M/ >>>> M/L = A

>>>> = A = R2 = 3.14* 0.000652 * 7850 = 0.01042

v = T/ = (6.5/0.01042) = 24.98 m/s

= 2*3.14*55 = 345.58 rad/s

P = 0.5*0.01042*345.582*0.00562*24.98 = 0.487 Watt

b) The amplitude will be decreased by a factor of 1/2

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