From: https://en.wikipedia.org/wiki/Rotational_energy
E = Earth's rotational kinetic energy is: 2.138×10^29 J.
From: https://en.wikipedia.org/wiki/Energy_density
D = Energy density of uranium: 1,539,842,000 MJ/L
Calculate: ((E/(D*1,000,000))^(1/3.0))/10 meters