Question

A wire of length 108 cm produces a fundamental note of frequency 256 Hz, when stretched by a weight of 1

Answer 1

Case I. Frequency of the fundamental note, v = 256 Hz

length of the wire, L = 108 cm

stretching force, T = 1 kg f  

Case II. Frequency of the major tone emitted

stretching force, T = 4 kg f

Let the length be increased by x.  

Thus, the length should be increased by 84 cm