Answer
170 Hz
Work Step by Step
Looking at the values for fundamental frequencies, we find that the lowest fundamental frequency possible is equal to double the original frequency. Thus, we find:
$ f = 85 \times 2 = 170 \ Hz$
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 14 - Exercises and Problems - Page 263: 40
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