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Equivalent Circuit for a Force-Driven Mass

\epsfig{file=eps/forcemassecCopy.eps,width=4in}

The ODE is obtained from the equivalent circuit by summing all ``voltages'' around the current loop to zero to obtain

$\displaystyle \zbox{-f(t) + m\dot v= 0}
$

The minus sign for $ f(t)$ occurs because the current arrow entered the minus side of the ``voltage source''


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``Introduction to Physical Signal Models'', by Julius O. Smith III, (From Lecture Overheads, Music 420).
Copyright © 2020-06-27 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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