Amplitude of a mass-spring system, which is executing simple harmonic motion decreases with time. If mass = 500g, Decay constant = 20 g/s then how much time is required for the amplitude of the system to drop to half of its initial value ?
(ln 2 = 0.693)
(1) 34.65 s
(2) 17.32 s
(3) 0.034 s
(4) 15.01 s
