The Minecraft world analysis

For this analysis, let's make one simple assumption: the Minecraft world is a cube measuring 60 million blocks on each side, with one block equal to one meter.

Now, assume the day/night cycle is caused by the world rotating like Earth. Unlike Earth, which completes one full rotation every 24 hours, the Minecraft world completes one in just 20 minutes.

If we consider a point located at the center of one face of the cube, it is 30,000 km away from the axis of rotation.

At that distance, the surface would be moving at approximately 565,500 km/h, roughly 339 times faster than Earth's rotational speed at the equator.

Such an extreme rotation would generate a centrifugal acceleration of about 822 m/s². To prevent anything located at the center of that face from being flung into space, the world's gravity would need to be at least 822 m/s², or about 84 times stronger than Earth's gravity.

In conclusion, if the Minecraft world were truly a 60-million-meter-wide cube completing one full rotation every 20 minutes, it would require a gravitational field roughly 84 times stronger than Earth's to remain physically stable.

Note: this model only ensures stability at the center of a face. Corners would experience higher centrifugal acceleration (~1.73×), meaning a uniform gravitational field could not stabilize the entire cube simultaneously.