At what time has the amplitude of oscillation of a spring-mass system with negligible friction decayed to 1/e of its original value? Does this time depend in a reasonable way on k, m, and c?
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Hello and welcome to MSE! Do you know the differential equation of a spring-mass system with negligible friction? Do you know how the solution depends on said parameters? What have you tried? – Mark Fantini Jan 31 '14 at 00:43
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You could quote the equation of motion of your system, defining $k, m, c$ – Ross Millikan Jan 31 '14 at 00:51