Answer: Work Needed to Compress Spring 4 cm

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SUMMARY

The work required to compress a spring can be calculated using the formula W = 1/2 kx². In this case, the spring constant k was determined to be 800 N/m based on the work done to stretch the spring 3 cm, which required 12 J. For compressing the spring 4 cm, the calculated work is 0.64 J. This calculation is confirmed as correct, utilizing the appropriate spring compression formula.

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Homework Statement



to stretch a spring 3 cm from its unstretched lenght, 12 J of work must be done. How much work must be done to compress this spring 4 cm from its unstretched lenght?

Homework Equations



W=1/2 kx[tex]^{2}[/tex]

The Attempt at a Solution




a. W=1/2 kx[tex]^{2}[/tex]

k=24/.03
k=800N/m

b. W=1/2 kx[tex]^{2}[/tex]
W= 1/2 (800)(-0.04)[tex]^{2}[/tex]
w= 0.64J

im not sure if this is correct..
 
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we haven't discuss this in class yet, so I am not sure if I am doing it right
 
Last edited:
Its x square...you have used x.Rest seems fine.
 

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