Example 4: string frequency 300 Hz for T= 40 N.
Find frequency for T = 50 N.
hint: use proportions! (Answ: 335 m/s)
Example 2: piano string 80 cm long, mass 1.4g
find frequency if tension is 120N. (Answ: 164 Hz)
Example 3: guitar string 60 cm long. Where
must one place a fret to raise the
frequency by a major fourth (4:3 ratio) (Answ: 45 cm)
EXAMPLES
Example 1: the A string (440 Hz) of a violin is
32 cm long. Find the speed of wave
propagation on this string. (Answ: 282 m/s)
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