Physics Stack Exchange - Classical Mechanics
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The classical-mechanics tag on Physics Stack Exchange, where physicists and students answer questions on Newtonian, Lagrangian, and Hamiltonian dynamics. Useful for resolving specific conceptual confusions and seeing how practitioners set up and check mechanics problems.
More resources on Classical Mechanics
Wolfram MathWorld
MathWorld is an online mathematics encyclopedia from Wolfram Research offering detailed, browsable articles on topics across the math spectrum, including algebra, geometry, calculus, and number theory. Each entry includes definitions, theorems, formulas, diagrams, worked examples, and links to further reading.
Classical Mechanics (MIT 8.01SC)
First-year Newtonian mechanics in self-study form: kinematics, Newton's laws, momentum, work and energy, torque, angular momentum, rotation and oscillations. 205 short lecture videos and problem sets teach learners to apply force and conservation-law methods to predict how bodies move.
Classical Mechanics III (MIT 8.09)
Lagrangian and Hamiltonian mechanics, constraints, rigid body dynamics, vibrations, central forces, Hamilton-Jacobi theory, action-angle variables and perturbation theory, with introductions to fluid mechanics, turbulence and chaos. Includes about 200 pages of lecture notes and problem sets.
Fundamentals of Physics I (Mechanics)
Yale's introductory calculus-based physics sequence, recorded in full: Newton's laws, conservation of energy and momentum, rotational motion, oscillations, special relativity, thermodynamics, and waves. Videos come with transcripts, problem sets, and exams for self-paced study.
Classical Mechanics
Stanford lecture series reformulating mechanics around the principle of least action: Lagrangians, Hamiltonians, phase space, Poisson brackets, and the link between symmetry and conservation laws. Aimed at adults with calculus who want the physicist's framework, not engineering problem drills.
Khan Academy Physics
Free sequence of short video lessons, articles and practice exercises covering introductory physics: kinematics, forces, energy, momentum, rotation, fluids, thermodynamics, waves, electricity and magnetism. Learners build the conceptual and problem-solving foundation expected in a first college physics course.