The two springs experience equal force
F = -k1x1 → x1 = -F/k1
F2 = -k2x2 → x2 = -F/k2
Two springs with spring constants k1 and k2 are connected in series. What is the effective spring constant keff? In other words, if the mass is displaced by x, find the keff for which the force equals F = -(keff)x.
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