A string of length 2 m and mass per unit length 0.01 kg/m is under a tension of 16 N. What is the fundamental frequency of vibration?
Answer and explanation
Correct answer: A. 10 Hz
- Step 1: Wave speed m/s; the fundamental is Hz. Answer: 10 Hz. Why not the others: 20 Hz: uses the wavelength equal to L. 5 Hz: uses a quarter-wave. 40 Hz: gives the wave speed instead.
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