Solve the all parts of given question:
Question: A guitar player tunes the fundamental frequency of a guitar string to 600 Hz.
Part A: What will be the fundamental frequency if she then increases the tension in the string by 14%?
Part B: What will it be if, instead, she decreases the length along which the string oscillates by sliding her finger from the tuning key one-third of the way down the string toward the bridge at the lower end?
Having trouble with this physics question, can you please explain with the answer.