Integrated Coordinated Science for the 21st Century
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Answers
For You To Do
- Be sure the masses hang beyond the pulley but are all up off the floor.
- If the pencil moves when the sting is plucked, tape or clamp the pencil in place.
- a) If the strings are the same material and length, the sounds will have the same pitch.
- a) The frequency will be higher.
- a) The shorter the length, the higher the pitch.
- a) Assume the tone produced is the fundamental which is shown in the top drawing on p. 185. The wavelength is twice the length of the part of the string that is vibrating.
b) As the string is made shorter, the pitch it makes goes up.
- a) See the table on 196. Here the variables are the load on the mass hanger and pitch.
b) The results are qualitative. (Have the students compare the pitch produced by each load.)
c) As the mass on the mass hanger goes up, the pitch the string makes goes up.
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