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Principles of Physics 11th ISV Edition · Waves-I · Problem 26
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Walker, Halliday & Resnick — Waves-I: Problem 26

26 If a transmission line in a cold climate collects ice, the increased diameter tends to cause vortex formation in a passing wind. The air pressure variations in the vortexes tend to cause the line to oscillate (gallop), especially if the frequency of the variations matches a resonant frequency of the line. In long lines, the resonant frequencies are so close that almost any wind speed can set up a resonant mode vigorous enough to pull down support towers or cause the line to short out with an adjacent line. If a transmission line has a length of 310 m, a linear density of 3.35 kg/m, and a tension of 90.1 MN, what are (a) the frequency of the fundamental mode and (b) the frequency difference between successive modes?

📝 풀이 접근법

주어진 조건: . In, 310 m, , a, 3.35 kg, 90.1 MN

구하는 것: (a) the frequency of the fundamental mode and; (b) the frequency difference between successive modes?

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📘 교재 정보

Principles of Physics · 11th ISV Edition
저자: Walker, Halliday & Resnick
출판사: Wiley
단원: Waves-I