Physicist Andreas Wahl conducted this very risky experiment. Armed with just the knowledge that things usually rotate faster when they are able to reach a central point, he goes off a 14-meter jump, with only a loose rope with a weight on the other end.
You can feel your heart jump as he plummeted down, only to be slowed down as the weight on the other end of the rope rotates several times to prevent the rope from dropping him.
What a heart-stopping experiment! You should follow him for more experiments.