Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 21 - Think and Explain: 37

Answer

When strummed, guitar strings will vibrate, and become warmer.

Work Step by Step

The material expands, changing the tension and the natural frequency. Therefore, a guitar should be played offstage and tuned while it is warm, so it will stay in tune during the performance.
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