Compare the following energies
(a) The rotational energy of the earth (rotating on its axis)
(b) The kinetic energy of the earth (in its orbit around the sun)
(c) The rotational energy of the sun (rotating on its axis)
(d) The kinetic energy of the moon (in its orbit around the earth)
Consider all bodies as solid spherical objects with uniform density, and consider all orbits as circular. Masses, diameters, orbital dimensions, and rotational periods are readily available on the web.
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