Why can a motorcycle remain balanced while stationary but can when in motion?
A motorcycle stays balanced under motion due to the gyroscopic effects created by the wheels as they spin. Due to the nature of this, the motorcycle actually would prefer to stay upright under motion, as opposed to just fall over. This is also why you actually have to use effort to turn the bike in either direction – to counter-act on the spinning forces of the wheels. When the bike is stationary, the wheels aren’t spinning and creating the gyroscope effect, so the bike is very unstable and will just tip over.
