The formula you want is a=r*w^2 where r is the radius and w is the rotational rate. 1g is ~10m/s^2 The challenge in realizing it almost entirely an issue of ge

The formula you want is a=r*w^2 where r is the radius and w is the rotational rate. 1g is ~10m/s^2 The challenge in realizing it almost entirely an issue of getting materials into orbit, which is the problem space tethers are targeting. The cost of getting to geosynchronous orbit is around $30k per kilo, so at the moment economics is limiting us rather than tech when it comes to building crazy space stations. If we could bring the cost per kilo down 100x or so then so many more possibilities open up.