Answer
$50$ times
Work Step by Step
The period of the oscillation is $40$ $ms$. Therefore, to find how many oscillations are done in one second, $$\frac{2\times1s}{40.0 \times 10^{-3}s}=25$$ The maximum is reached 50 times each second.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 15 - Oscillations - Problems - Page 440: 77b
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