# Difference between revisions of "Errata: In Exercise 4.6, Pm/J should be taken as 1 and factor of 1/2 is misplaced"

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{{errata page | {{errata page | ||

− | | chapter = | + | | chapter = Dynamic Behavior |

− | | page = | + | | page = 128 |

− | | line = | + | | line = 3 |

| contributor = R. M. Murray | | contributor = R. M. Murray | ||

− | | date = | + | | date = 8 Jul 08 |

| version = First printing | | version = First printing | ||

| text = | | text = | ||

+ | Part (c) of the exercise should read: | ||

+ | <blockquote> | ||

+ | Show that <font color="blue">if <math>P_m / J =1</math></font> there is a solution through the saddle | ||

+ | that satisfies | ||

+ | <center><amsmath> | ||

+ | \frac{1}{2} \Bigl(\frac{d\varphi}{dt} \Bigr)^2 - \varphi + \varphi_0 | ||

+ | - a\cos{\varphi} - \sqrt{a^2-1}=0. | ||

+ | </amsmath></center> | ||

+ | </blockquote> | ||

}} | }} |

## Latest revision as of 13:16, 8 July 2008

Return to Errata page |

Location: page 128, line 3

Part (c) of the exercise should read:

Show that if there is a solution through the saddle that satisfies

(Contributed by R. M. Murray, 8 Jul 08)