Finding elastic energy?
find the elastic energy stored in the spring when it is stretched to 0.20 m?
here is the graph: http://www.webassign.net/gphys/10-20.gif
do i use like f=kx? idk what the spring constant is? wtf?!
should this be simple…
The slope of the line on the graph will give you ‘k’ since k = F/x…
So k = change in y / change in x = 8 – 0 / 0.32 – 0 = 25 N/m
E = 1/2kx*2 = 1/2(25)(0.2)*2 = 0.5 J
Hope this helps…
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