# David Tong: Lectures on Dynamics and Relativity

This is an introductory course on Newtonian mechanics and special relativity given to first year undergraduates. The notes were last updated in March 2013. Individual chapters and problem sheets are available below. The full set of lecture notes come in around 160 pages and can be downloaded here. Please do email me if you find any typos or corrections.

PostScript
PDF

A more advanced course on classical dynamics, covering the Lagrangian and
Hamiltonian formulations,
can
be found here.

# Content

**1. Newtonian Mechanics: Postscript PDF**

Introduction; Newton's Laws of Motion; Inertial Frames; Galilean Relativity; Newton's Second Law.**2. Forces: Postscript PDF**

Potentials in One Dimension; Equilibrium and Harmonic Oscillators; Central Forces; Angular Momentum; Gravity; Electromagnetsm; Friction.**3. Interlude: Dimensional Analysis: Postscript PDF**

Dimensions; Scaling and Bridgeman's Theorem.**4. Central Forces: Postscript PDF**

Polar Coordinates in the Plane; The Effective Potential; The Orbit Equation; The Kepler Problem and Kepler's Laws; Rutherford Scattering.**5. Systems of Particles: Postscript PDF**

Centre of Mass Motion; Two Body Problem; Collisions; Variable Mass Problems; Rigid Bodies; Angular Velocity; Moments of Inertia; Parallel Axis Theorem; Motion of Rigid Bodies; Rolling, Rolling, Rolling.**6. Non-Inertial Frames: Postscript PDF**

Newton's Laws in a Rotating Frame; Centrifugal Force; Coriolis Force; Foucaults Pendulum; Larmor Precession.**7. Special Relativity: Postscript PDF**

Lorentz Transformations; Spacetime Diagrams; Simultaneity; Causality; Time Dilation; Length Contraction; Addition of Velocities; The Geometry of Spacetime; The Lorentz Group; Kinematics; Particle Physics; The Lorentz Group as SL(2,C); Terrell-Penrose Rotations; Spinors.

# Problem Sheets

**Problem Sheet 1: Postscript PDF**Single Particle Mechanics**Problem Sheet 2: Postscript PDF**Central Forces and Orbits**Problem Sheet 3: Postscript PDF**Systems of Particles and Spinning Things**Problem Sheet 4: Postscript PDF**Special Relativity

# Classical Mechanics on the Web

**Dynamics and Relativity**by Stephen Siklos, Cambridge**Mechanics:**by Daniel Arovas, UCSD**Mechanics and Special Relativity:**by Howard Georgi, Harvard-
**Special Relativity:**by Gary Gibbons, Cambridge. (Directly downloads pdf file). -
**Special Relativity:**by Joe Minahan, Uppsala.

# Some Classic Resources

**Newton's Papers**recently digitised by Cambridge University-
**The Special and General Theory of Relativity**by Albert Einstein -
**What Would Newton Do?**A lecture on the geometrical proofs used in the Principia.