Answer
$K=245\frac{N}{m}$
Work Step by Step
According to Hook's law:
$F=Kx$
Here, $F=w=mg$
Hence, $mg=Kx$
This can be rearranged as:
$K=\frac{mg}{x}$
We plug in the known values to obtain:
$K=\frac{(4)(9.8)}{0.160}$
$K=245\frac{N}{m}$
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 441: 93a
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