As I said, to change it to a rotating spherical reference frame you take the equations of motion in the Euclidian frame (flat, non-rotating) and transform them into the new reference frame (spherical rotating) using the appropriate transformation matrix.
I apologize if this doesn't make any sense to you, but just to show you what I'm talking about: Transformation Matrix.
As I said, to change it to a rotating spherical reference frame you take the equations of motion in the Euclidian frame (flat, non-rotating) and transform them into the new reference frame (spherical rotating) using the appropriate transformation matrix.
I apologize if this doesn't make any sense to you, but just to show you what I'm talking about: Transformation Matrix.