Acknowledgements Introduction Prolegomenon I. Real and apparent force 1.1 Real force 1.1 Apparent force Exercises Conventions about notation II. Velocity and acceleration in plane polar coordinates 2.1 Transformation of coordinates 2.2 Velocity and acceleration Exercises III. Rotating coordinate frames 3.1 Coriolis force 3.2 Magnitude of the Coriolis force 3.3 Centrifugal and Coriolis forces in rotating rectangular coordinates 3.4 Experts, novices and Hooke springs 3.5 Trajectories in the absolute inertial reference frame 3.6 A linkage analogy 3.7 Trajectory in rotating frame 3.8 Another approach using complex notation 3.9 The usage of the words "balance" and "equilibrium" Problems Exercises Some physical interpretation of what we have observed in exercise 3-1 IV. The paraboloidal dish 4.1 The paraboloid as a platform 4.2 Small amplitude motions in the rotating frame 4.3 First integrals Problems Exercises V. Surfaces of revolution 5.1 Hemispherical and paraboloidal dishes compared 5.2 Comparison with the Hooke spring plane 5.3 Results from first integrals 5.4 The paraboloid 5.5 The Hooke spring plane 5.6 Spherical dish 5.7 Rotation of the apsides 5.8 Numerical solutions Problems Exercises VI. Velocity and acceleration in spherical coordinates 6.1 Tranformation from cylindrical polar coordinates to spherical coordinates 6.2 Alternative forms in inertial space 6.3 Acceleration and Coriolis forces in rotating spherical coordinates 6.4 Trajectories on the surface of a gravitating sphere 6.5 Planer motion in spherical colc2