Answer
5 seconds
Work Step by Step
We use the equation for period to find the length of half of a period:
$\frac{1}{2}T = \pi \sqrt{\frac{L}{g}} = \pi \sqrt{\frac{25}{9.81}} \approx 5 s$
Essential University Physics: Volume 1 (4th Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0-134-98855-8
ISBN 13:
978-0-13498-855-9
Chapter 13 - Section 13.3 - Applications of Simple Harmonic Motion - Example - Page 236: 13.3
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