If the Length of a Piano Wire (Of Given Density)

question 21

Multiple Choice

If the length of a piano wire (of given density) is increased by 5%, what approximate change in tension is necessary to keep its fundamental frequency unchanged?

• A) decrease of 10%
• B) decrease of 5%
• C) increase of 5%
• D) increase of 10%
• E) increase of 20%

---

Definitions:

Imitates

To take or follow as a model; to replicate someone’s behavior or actions.

Resistance

Opposition or refusal to accept or comply with changes, policies, or practices.

Apathetic

Showing or feeling no interest, enthusiasm, or concern about something.

Minimal Effort

The least amount of energy or work expended to achieve a task or objective.