Going uphill with no friction, think maglev, what forces would the mass/vehicle only have to overcome its weight... and gravity? I used the 'search' function but yielded no results. Please feel free to discuss or to simply put me in the right direction. Just to put things in context, I am trying to get a vehicle (similar to a maglev) down from a certain elevation and back up. I apologize if it's an obvious question, shame on linguists for their lack of physics.