Mystery #2Tier 2-3spinning / balance
Why doesn't a moving bike fall over?
Stand a bike still and let go, and it topples instantly. Yet the moment it's rolling, it balances easily; you can even ride no-handed. Why does moving keep a bike upright?
Your guess
What's your hunch about why a moving bike is so much easier to balance than a still one?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.