It would be a vertical loop I think, as it would be on a rollercoaster.
Sun 4 Dec, 2016 09:19 pm
Here are a couple of sites that might help you:
http colon //seanelvidge dot com/2013/02/velocity-required-for-loop-the-loop/
http colon //science.howstuffworks dot com/engineering/structural/roller-coaster7.htm
You'll need to reconstruct the links. I don't know what constitutes a valid (won't be deleted by a moderator) link at this place.