Let’s find the transfer function for this translational mechanical system. Here, we have a mass-spring-damper system. It is clear that the input is the force 𝑓(𝑡) and the output is the displacement 𝑥(𝑡). The restoring force of the Hookean spring, along with the viscous damping force, impede the motion brought about by the forcing function 𝑓(𝑡). By drawing a free-body force diagram, we can use Newton’s Second Law to set up a second-order differential equation which formulates a dynamic mode

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