If the handle of a vibrating tuning fork is held solidly against a table, the so
ID: 778094 • Letter: I
Question
If the handle of a vibrating tuning fork is held solidly against a table, the sound from the tuning fork becomes louder. Why, and how will this affect the length of time the fork keeps vibrating?
1. Because a more massive surface is set into vibration, the sound becomes louder and the length of time the fork keeps vibrating becomes longer.
2. Because a more massive surface is set into more lower frequency vibration, the sound becomes louder. By conservation of energy, this reduces the length of time the fork keeps vibrating.
3. Because a greater surface is set into vibration, the sound becomes louder. By conservation of momentum, this reduces the length of time the fork keeps vibrating.
4. Because a greater surface is set into vibration, the sound becomes louder. By conservation of energy, this reduces the length of time the fork keeps vibrating.
Explanation / Answer
4. Because a greater surface is set into vibration, the sound becomes louder. By conservation of energy, this reduces the length of time the fork keeps vibrating.