Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 13 - Oscillations About Equilibrium - Problems and Conceptual Exercises - Page 445: 7

Answer

(a) $0.022s,45Hz$ (b) $1400rpm$

Work Step by Step

(a) We can find the time period and frequency as follows: $f=(2700\frac{rev}{min})(\frac{1min}{60s})$ $f=45Hz$ Now $T=\frac{1}{f}$ $\implies T=\frac{1}{45}=0.022s$ (b) The required rpms can be determined as $f=\frac{1}{T}$ $f=\frac{1}{0.044}\times \frac{60s}{min}$ $f=1400rpm$
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