3 ms·
Doubt it. Earth is not even a sphere.
Doubt it. Earth is not even a sphere.
Looks like you’re right! Earth is within .3% of being a sphere, where ball bearings are within .01%.
[https://en.m.wikipedia.org/wiki/Earth%27s_circumference https://en.m.wikipedia.org/wiki/Earth%27s_circumference]
Correct --- I should have said "smoothest".