PASCO WA-9611_13 SONOMETER - Manual (Page 18)

14
Sonometer 012-03489E
String tension
(T)
Hanging
Mass
(mass = M)
(weight = Mg)
Tension Linear Density Fundamental Wave
(T) (
µ
) Frequency Velocity
1 5 2 3 4 Slot
Figure 2.2 Setting the Tension
1Mg
2Mg
3Mg
4Mg
5Mg
➃ In Table 2.1, record the string tension (T) and the linear
density of the string (
µ
).
The tension is determined as shown in Figure 2.2. Just
multiply the weight of the hanging mass by one, two,
three, four, or five, depending on which notch of the
tensioning lever the mass is hanging from. The linear
density of the strings are given in the front of this
manual (see your teacher, if necessary).
➄ Change the string tension by hanging the mass from a
different notch. Repeat steps 3 and 4 for five different
values of the string tension.
➅ Set the string tension to a midrange value. Then repeat
your measurements of steps 3 and 4 using each of the
five different strings.
Table 2.1 Data and Calculations