Answer
$1.25\times10^{5}N/m$
Work Step by Step
$W=400J$
$x=0.08m$
$W=\frac{1}{2}kx^{2}$
or, $k=\frac{2W}{x^{2}}=\frac{2\times400}{0.08^{2}}=1.25\times10^{5}N/m$
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 5 - Work and Energy - Learning Path Questions and Exercises - Exercises - Page 175: 19
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