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Cosmic Discovery Hub

Earth Rotation Laboratory

Change Earth's spin from stopped (0×) to ten times faster.

0× stopped1× today2×10× extreme
Day length (sidereal)
23.934 hours
Equatorial surface speed
1,672.52 km/h
Centrifugal acceleration (equator)
0.0338791 m/s²
Effective gravity (equator)
9.77277 m/s²

Simplified: spherical Earth, equator only. Does not model shape change, oceans, atmosphere or geology.

Equations: T = T₀/f · v = f·ω₀·R · a = (f·ω₀)²·R · g_eff = g − a. Reference: sidereal day 23.934 h, Earth radius 6,371 km.

Model assumptions

Spherical Earth, equator only. Equations documented under the lab. Earth's shape, oceans and climate responses are long-term hypotheses, not outputs of this model.

Reference: NASA planetary data; Newtonian mechanics. This is an educational model, not an ephemeris.