An interesting concept I stumbled across the other day is Gyroscopic Precession. I am familiar with this concept, not by name but by experience with cycling and motorcycling. The faster the wheels on your cycle of choice are spinning the more difficult it is for that cycle to tip over. I cannot explain it better than the guy on YouTube so I am providing a link to two videos that cover the topic quite well.
Flywheel Experiment
Gyroscopic Precession