How much energy is stored in a spring with a spring constant of 390 N/m if the spring is compressed a distance of 0.45 m from its free lengt

Question

How much energy is stored in a spring with a spring constant of 390 N/m if the spring is compressed a distance of 0.45 m from its free length?

Group of answer choices

79 J

34000 J

39 J

180 J

88 J

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Sigridomena 3 years 2021-09-04T16:10:21+00:00 1 Answers 5 views 0

Answers ( )

  1. niczorrrr
    0
    2021-09-04T16:12:20+00:00
    Reply

    F=-ks
    F=-(390)(.45)
    F=-175.5 N

    Work=force x displacement
    Work= 175.5(0.45)
    Work= 78.98 J

    Work = ∆E =78.98 J

    Answer=79J (first option)

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