PASCO WA-7428 Product Manual

Sonometer Sonometer
WA-7428
About the product About the pr oduct
The Sonometer is an apparatus used for exploring the wave
properties of vibrating strings. It includes two mounts to install strings
of different linear densities. String length is varied by changing the
position of a sliding bridge under the string. String tension is varied by
hanging masses from the lever attached to the end of the string. To
vibrate the strings, pluck them with a pick or use resonance by
vibrating a tuning fork. Use a sound sensor with SPARKvue or PASCO
Capstone to measure the frequency of vibration.
What's included What' s included
• Sonometer
• 2× Bridge
• 2× Guitar pick
• 4× 0.014-inch string
• 4× 0.018-inch string
Required items Requir ed items
• Large Slotted Mass Set Large Slotted Mass Set
Hang the masses from the levers to apply tension to the strings.
Use the ME-7589 Large Slotted Mass Set (2 kg Set) or the ME-7566
Large Slotted Mass Set.
• Tuning Forks Tuning Forks
Resonate the strings with tuning forks. Use the SE-7342 Tuning
Fork Set or the SE-7728 Tuning Fork Technical Set.
• Sound Sensor Sound Sensor
Measure wave frequency with a sound sensor. Use the PS-3227
Wireless Sound Sensor or the UI-5101 Sound Sensor with
Microphone.
P P ar art names and functions t names and functions
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Tuning peg Tuning peg
1
Turn the tuning peg to adjust the tension in the string until the
tensioning lever is level.
String guide String guide
2
Make sure that the string is sitting in the string guide when
applying tension to the string.
Bridge Bridge
3
Slide the bridge along the ruler to vary the length of the string.
Make sure to put the groove on the bridge onto the raised edge
on the Sonometer. Use the indicator on the bridge to measure
the length of the string.
Ruler Ruler
4
Use the ruler with the bridges to measure the length of the string.
The length of the string is defined as the distance between the
string guide at the 0 cm mark and the indicator on the bridge.
Soundboard Soundboard
5
Put the base of a tuning fork on the soundboard to resonate the
strings.
Tensioning lever Tensioning lever
6
Hang masses from the lever to provide tension on the string. The
lever applies a tension equal to five times (5×) the mass weight.
The lever includes a spirit level to determine when the lever is
level.
CAUTION: Do not hang more than 3 kg of mass from each
lever. Remove masses from the levers when storing the device.
Adjustable foot Adjustable foot
7
Turn each foot as needed to make the Sonometer level.
Thumbscrews Thumbscrews
8
Use the thumbscrews to secure the lever end and peg end to the
soundboard during assembly.
Product Guide
012-17145A
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Sonometer | 1
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