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A stretched string fixed at each end has a mass of 48.0 g and a length of 8.80 m. The tension in the string is 51.0 N. (a) Determine the positions of the nodes and antinodes for the third harmonic. (Enter your answers from smallest to largest distance from one end of the string.) nodes: 0 2.9 5.9 8.8 antinodes: 7.3 m 0 X The correct answer is not zero. m 4.4 EEE Need Help? m m (b) What is the vibration frequency for this harmonic? 16.48 Hz Read It Watch It
In the arrangement shown in the figure below, an object of mass m = 4.0 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. (Ignore the mass of the vertical section of the cord.) Vibrator L Ⓡ (a) When the vibrator is set to a frequency of 130 Hz, a standing wave with six loops formed. What must be the linear mass density of the cord? 0.0052 ✔ kg/m (b) How many loops (if any) will result if m 1.0 ✔loops 122 Read It (c) How many loops (if any) will result if m is changed to 14 kg? (Enter 0 if no loops form.) 3.2 X Examine how changing the mass affects the wave speed and wavelength and how that affects the number floops. loops Need Help? Master It changed to 144 kg? (Enter 0 if no loops form.)