A standard PDF search yields a book covering:
Open the PDF to Chapter 5 (Lagrangian). Do not read the derivation of the Euler-Lagrange equation. Instead: Pdf Classical Mechanics By Gupta Kumar Sharma
Unlike graduate-level masterpieces like Goldstein’s Classical Mechanics, the Gupta-Kumar-Sharma text is deliberately designed for B.Sc. (Honours) and B.Sc. (Pass) students majoring in Physics. Its philosophy is rooted in clarity, repetition, and problem-solving rigor. The authors assume a student has a working knowledge of calculus and differential equations but needs extensive hand-holding to navigate the abstract concepts of Lagrangian and Hamiltonian mechanics. A standard PDF search yields a book covering: