- #1
bobsmith76
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Homework Statement
A force of 18 N compresses a spring by 15 cm. By how much does the spring’s potential energy change?
Homework Equations
Ee = .5kx2
The Attempt at a Solution
Why doesn't .5 * 18 * .152p/sup] do it? Seems pretty obvious. My answer is .2 J, the book's answer is 1.4J