## College Physics (4th Edition)

Published by McGraw-Hill Education

# Chapter 11 - Problems - Page 431: 58

#### Answer

The fundamental frequency of oscillation is $10~Hz$.

#### Work Step by Step

Let $L$ be the length of the string. The wave travels a distance of $L$ in a time of $0.050~s$. Therefore, the wave could travel a distance of $2L$ in a time of $0.10~s$, so this time is the period of the fundamental. We can find the fundamental frequency: $f = \frac{1}{T}$ $f = \frac{1}{0.10~s}$ $f = 10~Hz$ The fundamental frequency of oscillation is $10~Hz$.

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