A guitar string with a mass of 10.0 g is 1.00 m long and attached to the guitar at two points separated by 61.6 cm.
(a) What is the frequency of the first harmonic of this string when it is placed under a tension of 83.4 N?
(b) If the guitar string is replaced by a heavier one that has a mass of 16.2 g and is 1.00 m long, what is the frequency of the replacement string's first harmonic?