A mass weighting 56 lbs stretches a spring 8 inches. The mass is in a medium that exerts a viscous resistance of 28 lbs when the mass has a velocity of 4 ft/sec. Suppose the object is displaced an additional 4 inches and released. Find an equation for the object's displacement, u(t), in feet after t seconds. u(t) = Question Help: ✓ Video

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