Part a of the figure shows a weight W mounted between two springs. If the free end of spring k1 is suddenly displaced through the distance x = a, as shown in part b, determine the maximum displacement y of the weight. Let W = 5 lbf, k1 = 10 lbf/in, k2 = 20 lbf/in, and a = 0.25 in.

Ignore the mass of each spring and solve using energyconservation.

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www. (a) (b)