06:14-08:04 What is the relation between orthogonal component of acceleration and the radius of curvature? (3/4)
08:04-10:00 Orthogonal component of acceleration depends not only on the radius of curvature. (4/4)
00:00-02:22 How does circle show up in mechanical model? (1/4)
02:22-06:14 What makes a particle turn? (2/4)
