device that applies braking force proportional to speed?
We were wondering if there are mechanical brakes out there that apply a force proportional to the speed. A circular damper, is how we would describe it, I think. Or something like a gas shock (the things on screen doors and car trunks) but with a circular motion rather than a linear stroke. Anyone have any ideas? Anything that's commercially available, small, and somewhat inexpensive is fair game. Bonus points for things that can be made by hand.. Thanks!