39. Suppose that a string having a mass per unit length of 0.32 g/cm had been tested in Experiment 2. The 4th harmonic of this string would most likely have occurred at a tension:
Your Answer is
Correct Answer is D
Explanation
Trend question, 0.32g/cm is denser than the densest Z rope, so when it is also 4th, the data should be more extreme. Compared with XYZ in Table 2, it is found that the greater the density, the greater the pulling force of the same harmonic , that is, the pulling force of the new rope should be greater