The mass can pass through the equilibrium position at most once, regardless of the initial conditions if the system described by the equation m u ″ + γ u ′ + k u = 0 is either critically damped or overdamped.

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Chapter 3.7, Problem 13P

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The mass can pass through the equilibrium position at most once, regardless of the initial conditions if the system described by the equation mu″+γu′+ku=0 is either critically damped or overdamped.

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