Rotating systems A Nexus mindmap Lagrangian of free particle 0 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 2 http://www.youtube.com/watch?v=Pb69HENUZs8 0 http://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html 3 Local file (mp4) 4 Equations of motion 2 Solution 2 Free particle in 2D in a rotating co-ordinate system 0 0 0 1 Cartesian Co-ordinates 0 0 0 1 Not so clear what Newton's laws should look like 0 0 0 0 1 1 0 2 0 3 0 4 We can split up the forces easily enough 5 1 Polar co-ordinates 1 0 1 Relationship between polar and cartesian 0 1 0 1 2 2 0 1 2 3 The Euler-Lagrange equations will be the same form in polar co-ordinates, so use them to find the RHS 4 Lagrangian 2 0 3 Newton's 2nd law in polar co-ordinates 1 Rotating systems