A single-degree-of-freedom system consists of a mass of (20 mathrm{~kg}) and a spring of stiffness (4000 mathrm{~N}
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A single-degree-of-freedom system consists of a mass of \(20 \mathrm{~kg}\) and a spring of stiffness \(4000 \mathrm{~N} / \mathrm{m}\). The amplitudes of successive cycles are found to be \(50,45,40,35, \ldots \mathrm{mm}\). Determine the nature and magnitude of the damping force and the frequency of the damped vibration.
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