Elias had trudged through the recommended course texts. One was too verbose, treating physics like a branch of philosophy; another was too terse, assuming Elias knew things he had long forgotten. He needed a bridge. He needed something that treated mechanics with the rigor of a mathematician but the soul of a physicist.
You're looking for a PDF of "Classical Mechanics" by R. Douglas Gregory! classical mechanics r. douglas gregory pdf
Mastering the Foundations: A Guide to R. Douglas Gregory’s Classical Mechanics Elias had trudged through the recommended course texts
: Coverage of simple, damped, and driven harmonic motion. another was too terse
The textbook is divided into four primary parts, spanning 19 chapters and approximately 596 pages: