1.explain how a cyclist maintain his stability when riding a bicycle
2.explain why it's easier to loosen a nut with a long spanner than a short one.
3. explain why the handle of a door is usually placed as far as possible from the hinges
3 answers
The last two are related to leverage. The first has to do with the gyro effect. I will be happy to critique your thinking.
A moving bicycle is already stable and thus the cyclist remains upright.
As the rider is cycling he maintains the stability by riding upright.
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