physics

I took a mechanics course 9 years ago with an earlier edition, finished undergrad and left the study of physics. Recently I bought a new edition and I have just finished self studying this book and I felt that it's quite excellent. The problems are challenging but that is precisely what I expected. I think it really deserves 4 stars but I gave it 5 because the average ratings given by other reviewers is too low. I would like to go through the positives and negatives of this text. However keep in mind that the negatives of this text are apparent pretty much in every physics text.

Positives: 1) The text is easy to understand, the problems follow from the text 2) Answers to even numbers excercises in the back of text. This is absolutely crucial if you are self studying without an instructor. 3) Problems are random in their difficulty and individually comprehensive in their review of the chapter.
4) The Mathematics is pretty elementary, with a solid understanding of Calculus and differential equations you should be properly equipped to handle the entire text.

Negatives: 1) There are little to no difficult problems involving Newtonian formalism (Forces). Energy and momentum is predominantly used, for good reason, but it does not hurt to go back to the more rigorous approach of Forces for some difficult problems.

2) It would be nice to have a chapter dedicated to cyclic coordinates, Poisson Brackets and Canonical Transformations.

3)Impulses(chap 9) are dealt with in Integral form as opposed to differential form of the time change in momenta. The latter is much more intuitive and useful for solving problems.

4)Wider use in problems and examples of Poisson's equation for gravity.

5) Relativity should be introduced much earlier in the text. This is one of the formalisms of every undergraduate textbook in physics which I do not understand. Relativity always gets pushed back towards the end of textbooks. There is nothing particularly difficult about the subject that demands that it get treated in such a fashion. As opposed to the three chapters prior (dynamics of rigid bodies, coupled oscillations and waves) which are much more demanding. Furthermore it would be useful for students taking E&M at the same time as Mechanics to have had some experience with 4 vectors before dealing with Maxwell's equations.

Whether knowingly or unknowingly, most of the physics text reviews that I have read may be divided into two categories:

- those who loved or hated the book because it was not written to teach physics through a conceptual framework.

- those who loved or hated the book because it was not written to teach physics through the development of skills.

Then the reviews may be divided again into two categories:

- those who loved or hated the book because it conveyed an exclusively classic and/or historical treatment of physics.

- those who loved or hated the book because it conveyed a modern treatments of physics.

Therefore, I will write my review within the same framework that everyone else seems to...

I loved this book because it was written to teach physics through the development of SKILLS; I loved this book because it did so through a CLASSIC TREATMENT of physics.

Now I will explain why...

The study of physics is FAR MORE than an extraction of information from a book, the way that, say, reading an encyclopedia entry is. The study of physics, rather, is a MENTAL DISCIPLINE, that takes 10,000 hours of intensive mental effort just to become a 'fairly skilled beginner', and at least half a lifetime of intensive mental effort to become an expert in just one, very small, sub-sub-field. It is a journey in which one must tavel the same mental footsteps that the great physicists of the past did before one is ready to travel the new and original mental footsteps of their own research activity. Along the way, one must start with easy treatments, must progress through the intermediate treatments, and must one day tackle the tremendously difficult advanced treatments, of every sub-field of study. Early in the study of a new stage of such a sub-field, one must obtain a solid understanding of every concept, and after this, they must move on from mere concepts, and must develop an exceptional skill set. And one day, if one has been utterly dedicated and unwavering, and if one has worked harder than they ever thought would be necessary when they stood at the beginning of the road... one WILL find that they have reached a higher realm.

I am utterly convinced that this book is the ideal written work that one should study at the time and place in the journey that it is usually encountered on this road.

I came to this course after taking honors freshman physics at Yale with An Intro to Mechanics by Kleppner and Kolenkow. And, unfortunately, this book just is not as good. The mathematical derivations are often tedious and uninsightful, a good description as well for many of the problems. In addition, many of the problems, particularly the tougher ones, are already worked out in the text. For me, the text is a combination of mediocre treatment of material with exceptionally poor problems. The problems in this text are, in general, easier than those in K&K, but they often take three times as long to write out. Many of them are exercises in 10th grade algebra, or 12th grade calculus (read: horrible integrals and looong expressions to simplify). What is required is not insight, but exceptional care at not making simple errors and patience for long derivations of often obvious results. For a physics major, this book just seems like a colossal waste of time and money. If you want reinforcement of concepts, turn to Feynman in his lectures. For insightful and challenging mechanics (though Hamiltonian and Lagrangian dynamics are missing), Kleppner and Kolenkow is a far better text.