A cello is similar to a violin, with 4 longer strings and a larger body. The highest frequency string is A3 at 220 Hz (one octave below A440 on an equally tempered scale). The string is often made of tungsten to give a tough dense material with a mass of about 1.5 grams per meter. What tension would you apply to tune this string to a fundamental at 220 Hz if it is 0.695 meters long? Remember that the string is fixed at both ends. about 140,000 N about 1.4 N about 35 N about 140 N