I'm planning to build a machine which at some point tows a heavy weight on a rope in the air. Once the weight is heigh enough up in the air I want to keep it there for about an hour or so, before I want to put it down again in a controlled manner.
As far as I know, I can brake a DC motor, but I think this takes energy so I would like to avoid doing that for as long as an hour. I guess there should be other options, such as putting a lock of some sort on the rope, but I have no clue how something like that would work.
Could anyone give me some tips on what a usual/best way of blocking a rope for a long time is?