View source for Errata: In Example 5.5 and 5.6, m1 and m2 should be m

{{errata page
| chapter = Linear Systems
| page = 144
| line = -4 and page 148, line -1
| contributor = J. Bechhoefer
| date = 26 Jan 09
| rev = 2.10a
| version = First printing
| text = 
In Examples 5.5 and 5.6, the figures show a single value <math>m</math> for both masses.  The correct equations of motion are
<center><amsmath>
    m \ddot{q}_1 = -2kq_1 - c \dot{q}_1 + kq_2, \qquad
    m \ddot{q}_2 = kq_1 - 2 k q_2 - c \dot{q}_2.
</amsmath></center>
}}