Earth has a mass of 5.98 x 1024 kilogram and a radius of 6.38 x 106 meter. Suppose it is a uniform solid sphere. The distance of Earth from the Sun is 1.50 x 1011 meter. (Suppose Earth completes a single rotation in 24 hours and orbits the Sun once every 365 Earth days).
(a) Obtain the rotational kinetic energy of Earth on its axis?
Answer in Joules
(b) Obtain the rotational kinetic energy of Earth in its orbit around the Sun?
Answer in Joules