User talk:SpudMoney

It says on this page that the Orbital is approximately 3.71 million kilometres in diameter. Shouldn't that say 3.71 million kilometres radius, which becomes 7.42 million kilometres in diameter?

Here're my calculations. Correct me if I'm wrong here.

Assume 9.8 metres per second squared for gravity.

In order to achieve that sort of acceleration on the surface, the curve of the circle needs to curve in by 9.8 metres every second.

That means that the radius * ( 1 - cos φ ) = 9.8 metres

Or

radius = 9.8 metres / ( 1 - cos φ )

For this to be one second, φ = 360 / ( 60 * 60 * 24 ) = 0.00417 degrees

Plugging that number into my calculator I get 3706157058.5425916083219691892253 metres, or 3.71M kms. But that is radius, not diameter.

Please show me where I have gone wrong.