How conveyor-belts actually work (was 6x mass = 6x inertia)

--- In spacesettlers@yahoogroups.com, "Victor Smith" wrote:
> a belt that has trays permanently affixed to the top which then make the turn at the end

The turn at the end is adjacent to either another belt or a metal tray or slide. There is only a small gap between. Again, see the UPS Worldport documentary:
http://www.youtube.com/watch?v=KWAwL3Rlbjo

> or where the tray folds over

...Then how does the package get to the next belt?