Frequency of the standing wave string
Preparation thing：AC RBI type recording timer,Thread、Stand×2,C-type clamp、 Plumb,If
there is, stroboscope
Number of people：One person〜Two persons
Procedure：1.As shown, put a weight through a pulley that is attached to
the recording timer thread was attached to the stand.2.Find
a place to activate the timer recording, you can go as close to the left
of the stand right, clean a stationary body can be.
Result:Standing wave one could belly-shedding and tension string in a horizontal
string of length 2.0m.Square of 4.0 × 10 speed of the transverse wave traveling
through string was [m / s]. Since they use v = fλ of basic equations of
wave to determine the frequency, and then transformed into f = v / λ, from
the square / 4.0m of f = 4.0 × 10, is now frequency is 100.
＊Voice flows through the video below, please note the volume.