Conceptual Physics (12th Edition)

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

Chapter 19 - Think and Solve: 37

Answer

a. If the bob goes back and forth twice each second, the frequency f = 2 cycles/second = 2 hertz = 2 Hz. b. Period $T = \frac{1}{f} = \frac{1}{2 Hz} = 0.5 s$. c. The amplitude is the distance from the equilibrium position to the maximum displacement. In other words, this is the distance from the midpoint to the endpoint. The amplitude is one-half of the peak-to-peak distance of 20 cm, which means amplitude = 10 cm.
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