I Variational Principles in Classical Mechanics (Douglas Cline)

AI Thread Summary
The discussion centers on the textbook "Variational Principles in Classical Mechanics" by Douglas Cline and its potential as a substitute for the widely regarded "Goldstein." Participants express curiosity about Cline's book, noting its affordability and the desire for alternative perspectives in classical mechanics. Comparisons are made to other texts, including Marion and Thornton, with Goldstein being highlighted as the standard for its depth and advanced content. Overall, there is interest in exploring Cline's work while acknowledging the established reputation of Goldstein. The conversation reflects a broader search for diverse resources in classical mechanics education.
CC4
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Hello,
Has anyone read/heard about the textbook Variational Principles in Classical Mechanics, written by Douglas Cline? Any thoughts on whether I could use it as a replacement for Goldstein?
Thank you!
 
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CC4 said:
Hello,
Has anyone read/heard about the textbook Variational Principles in Classical Mechanics, written by Douglas Cline? Any thoughts on whether I could use it as a replacement for Goldstein?
Thank you!

It seems like an interesting book, and it's quite cheap. I'm tempted to buy it since I'm always happy to know a new/different classical mechanics book.
 
I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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