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THe work done to compress a spring with a force constant of 290.0 N/m a total of 12.3mm is.. and the answer is .0219J but i cant get this answer

This is what i did

F=kx

F=290(.0123)

F=3.567

W=Fcos0 d

W=3.567(.0123)

.0439J

What am i doing wrong??

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# Homework Help: Ideal Springs

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