- #1

lzh

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## Homework Statement

consider the mechanical system below. Find the equation depicting the system. u is the input force. sorry for the poor picture, I had to draw it on my tablet...

http://img685.imageshack.us/img685/1043/ogataprob.png

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## Homework Equations

F=ma

## The Attempt at a Solution

I'm not sure how to treat the dashpot in parallel with the mass. I came up with the following system of equations:

0=k1x+mx"+k2(x-y)+b(x-y)

0=b(x-y)+k2(x-y)+k3(y-u)

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