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#Attach a known [[weight]] (approximately 1N) to the [[Coil Spring|spring]].
#[[Measure]] the new length of the [[Coil Spring|spring]].
#Calculate the [[extension]] of the [[Coil Spring|spring]] by [[subtract]]ing subtracting the original length from the new length of the [[Coil Spring|spring]].
#Repeat steps 2-4 up to around 6N.
#Plot a [[Scatter Graph|scatter graph]] with the [[force]] of [[weight]] on the [[y-axis]] and the [[extension]] on the [[x-axis]]. The [[gradient]] of [[Line of Best Fit|line of best fit]] will be the [[Spring Constant|spring constant]] of the [[Coil Spring|coil spring]].