Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 11 - Oscillations and Waves - Problems - Page 324: 46

Answer

0.41

Work Step by Step

The bug moves in simple harmonic motion. The maximum KE is proportional to the square of the amplitude. The amplitude is half of the peak to peak motion. $$\frac{KE_f}{KE_i}=\frac{0.5kA_f^2}{0.5kA_i^2}=(\frac{2.25cm}{3.5cm})^2=0.41$$ The KE changed by a factor of about 0.41.
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