Have you noticed that if you take your mouse and hang it from the end it will start to twist until it becomes untwisted? My puzzle is this:
If you have a really long rope and not enough vertical space, how do you untwist it?
Have you noticed that if you take your mouse and hang it from the end it will start to twist until it becomes untwisted? My puzzle is this:
If you have a really long rope and not enough vertical space, how do you untwist it?
You grab one end, and
a meter from that you roll up the remaining rope, then fixate it and let the knot hang.
Consider the first meter fully untwisted. Open the knot, grab the rope where the knot was, roll up the remaining rope another meter apart. Repeat till you untwisted it all, meter by meter.
If you don't have enough vertical space, then perhaps
Find somewhere with plenty horizontal space, and bring a friend. Then, you grab one end, and your friend grabs the other. Then you both pull until the rope is untwisted.
Building on @Mike Q's answer,
Before grabbing one end, attach a spring to the other end of the mouse , and then fix a spring to a rigid, immovable body such that the spring is stretched (and has enough force constant to be able to pull on the mouse and the rope).
This is because
the human's hands might not be a very reliable constant, uniform force in the same direction.