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What factors are related to the rotation of?

Answer: The shape of the disk, the height of the disk, the shape of the lower end of the shaft and the insertion of the shaft in the center of the disk are all factors that make the gyro rotate for a long time.

What kind of gyro rotates best?

Answer: the disk is big, high, and has a shaft tip.

What are the characteristics of high-speed rotating gyro?

A: There must be stability.