The springs exert a force that is proportional to their compression and the proportionality constant is the spring constant k. The two side springs provide additional resistance if the weight W is too heavy for the center spring. When the weight is gently displaced, it moves through a distance x before coming to rest. The weight must balance the spring forces at this new position:
W = k1*x if x < d and W = k1*x+2*k2(x-d) if x >= d k1=10^4 N/m; k2=1.5*10^4 N/m; and d=0.1 m. Test case W = 2000** also cant use iteration
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