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: 30

Answer

a. 1.4 s b. Undefined

Work Step by Step

a. The period of a pendulum is given by $T=2 \pi \sqrt{\frac{\mathcal{l}}{g}}$. Use the given length and solve for the period of 1.4 s. b. In the freefalling elevator, the mass will not swing back to equilibrium, so the period is infinite (or undefined).
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