Find the force constant fron the graph

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r-soy
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Hi all
attachment.php?attachmentid=29316&stc=1&d=1287763963.jpg



Find the force constant fron the graph

k = 1/0.27 = 3.70 n/m ( is this ok )

plese I want your help
 

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I can't see the graph very well...but slope is [tex]\frac{\Delta\;y}{\Delta\;x}[/tex] so as long as the y-axis is Force (in N) and the x-axis is displacement (in m), then the slope would be N/m or k.
 
slope = k

I find the slope but is k is correct ?