Question: A 1-in-diameter telephone wire is mounted in air at 20C and has a natural vibration frequency of 12 Hz. What wind velocity in ft/s will

A 1-in-diameter telephone wire is mounted in air at 20°C and has a natural vibration frequency of 12 Hz. What wind velocity in ft/s will cause the wire to sing? At this condition what will the average drag force per unit wire length be?

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