Answer
$80N/m$
Work Step by Step
$F=4N$
$x=0.05m$
Applied force =$F=kx$
$k=\frac{F}{x}=\frac{4}{0.05}=80N/m$
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: 17
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