Question
Asked Dec 28, 2019
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In the arrangement shown in Figure P14.50, an object of mass m = 5.0 kg hangs from a cord around a light pulley. The length of the cord between point P and the pulley is L = 2.0 m. (a) When the vibrator is set to a frequency of 150 Hz, a standing wave with six loops is formed. What must be the linear mass density of the cord? (b) How many loops (if any) will result if m is changed to 45 kg? (c) How many loops (if any) will result if m is changed to 10 kg?

Vibrator
Figure P14.50
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Vibrator Figure P14.50

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Expert Answer

Step 1

Formula to calculate the wavelength of standing wave formed with six loops is,

Physics homework question answer, step 1, image 1
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Step 2

The speed of the waves in the string is,

Physics homework question answer, step 2, image 1
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Step 3

Since the relation between spee...

Physics homework question answer, step 3, image 1
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