A spring, for which k=48 Ib/ft, hangs in a vertical position with its upper end fixed. A mass weighing 16 Ib is attached to the lower end. After coming to rest, the mass is pulled down 2 inches and release. If the medium a resistance of v/64 determine the magnitude of the damping factor after 26 sec. А) 1/3 В) 2/3 C) 1/5 D 1/2 E) none of them
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