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A solid sphere of uniform density is attached to a massless rod at the sphere’s surface, and is spinning around the rod at 1.0 radian/s. The sphere is 1.0 meter in radius, and 1.0 kg in mass. What is the rotational kinetic energy of the sphere?

a) 2/5 J

b) 1/5 J

c) 3/5 J

d) 7/10 J

e) 3/10 J

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