When you doing force problems/examples for your students, how do you explain why you choose the coordinate system you do? I told them I pick the coordinate system that will make it easy.
Actaully a more appropriate way to see this is the orientation of the coordinate axis. We are only using x-y coordinates at this point.
TIna
Tina Fanetti
Physics Instructor
Western Iowa Technical Community College
4647 Stone Ave
Sioux City IA 51102
712-274-8733 ext 1429