A 100 kg mass is suspended by a spring of stiffness 30 x 10^3 N/m with a viscous-damping constant of 1000 N s/m. The mass is initially at rest and in equilibrium. Calculate the steady-state displacement amplitude and phase if the mass is excited by a harmonic cosine force of 80 N at 3 Hz.

A 100 kg mass is suspended by a spring of stiffness 30 x 10^3 N/m with a viscous-damping constant of 1000 N s/m. The mass is initially at rest and in equilibrium. Calculate the steady-state displacement amplitude and phase if the mass is excited by a harmonic cosine force of 80 N at 3 Hz.

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A 100 kg mass is suspended by a spring of stiffness 30 x 10^3 N/m with a viscous-damping constant of 1000 N s/m. The mass is initially at rest and in equilibrium. Calculate the steady-state displacement amplitude and phase if the mass is excited by a harmonic cosine force of 80 N at 3 Hz.

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