We have shown that electrical networks can be modeled by a transfer function, G(s),
that algebraically relates the Laplace transform of the output to the Laplace transform
of the input. Now we will do the same for mechanical systems. In this section we
concentrate on translational mechanical systems. In the next section we extend the
concepts to rotational mechanical systems. Notice that the end product, shown in
Figure 2.2, will be mathematically indistinguishable from an electrical network.
Hence, an electrical network can be interfaced to a mechanical system by cascading
their transfer functions, provided that one system is not loaded by the other.