Pianos Are Usually Strung with Multiple Identical Wires Sounding Each

question 45

Multiple Choice

Pianos are usually strung with multiple identical wires sounding each note. If two wires that are each meant to have a fundamental frequency of 283.5 Hz are played, and a beat frequency of 1.5 Hz is heard, by what fraction must the string which is lower in frequency than the other have its tension adjusted?

• A) 0.27%
• B) 0.53%
• C) Not enough information
• D) 1.1%

---

Definitions:

Machine Purchase

The acquisition of industrial or office machinery, usually considered a long-term investment in assets.

Extraordinary Repair

Major repairs extending the useful life of an asset far beyond the normal maintenance.

Betterment

The act of improving or increasing the value of an asset or property through enhancements or upgrades.

Capital Expenditure

Financial resources deployed by a business to buy or enhance tangible assets like real estate, factories, or machinery.