A guitar string 0.65 m long has a tension of 61 N and a mass per unit length of 3.0 g/m. (i) What is the speed of waves on the string when it is plucked? (ii) What is the string's fundamental frequency of vibration when plucked? (iii) At what other frequencies will this string vibrate?
A. (i) 123 m/s (ii) 100 Hz (iii) f = m(100 Hz), m = 2, 3, 4, . . .
B. (i) 143 m/s (ii) 110 Hz (iii) f = m(110 Hz), m = 2, 3, 4, . . .
C. (i) 163 m/s (ii) 120 Hz (iii) f = m(120 Hz), m = 2, 3, 4, . . .
D. (i) 173 m/s (ii) 125 Hz (iii) f = m(125 Hz), m = 2, 3, 4, . . .