A mass m is suspended by a spring—with spring constant k—from a fixed support, and a second, identical mass/spring combi

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A mass m is suspended by a spring—with spring constant k—from a fixed support, and a
second, identical mass/spring combination is suspended the first mass. Both masses are free to oscillate vertically. (We studied this system in class.) Take the masses of the springs themselves to be negligible, and neglect all frictional and drag forces. The usual way to start this system is to pull the lower mass down a distance D from its orignal equlibrium point,
let the two masses come to rest in new equilibrium points, then release the second mass at time t = 0. Find expressions for the motions y1(t) and y2(t) of each mass, measured from their original equilibrium points. All the constants in your solutions should be determined in terms of k, m, and D.