# physics

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What is the rotational kinetic energy of a planet about its spin axis? Model the planet as a uniform sphere of radius 6000 km, and mass 6.21 x 10^24 kg. Assume it has a rotational period of 24.0 h.

• physics -

I=2mR²/5
ω=2π/T
KE= Iω²/2

• physics -

KE= m(R^2)ω²/5

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