Waves, Sound and Light: Sound and Music
Sound and Music: Audio Guided Solutions
Problem 32:
Marc is attempting to tune his guitar. After adjusting his E4 string to 330 Hz, he begins to tackle the B3 string. In the process, he plucks both strings simultaneously and notices beats occurring at a rate of 12 beats in 4 seconds. When plucked individually, Marc observes the B3 string to sound out at a higher pitch. What is the frequency of the B3 string?
Audio Guided Solution
Habits of an Effective Problem Solver
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Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
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Identify the known and unknown quantities and record in an organized manner, often times they can be recorded on the diagram itself. Equate given values to the symbols used to represent the corresponding quantity (e.g., v = 345 m/s, λ = 1.28 m, f = ???).
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Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
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Identify the appropriate formula(s) to use.
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Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Sound and Music at The Physics Classroom Tutorial.
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