physics

A basketball player entertains the crowd by spinning a basketball on his nose. The basketball has a mass of 0.622 kg and a radius of 0.116 m. If the basketball is spinning at a rate of 7.00 revolutions per second, determine the following. Treat the ball as a thin, spherical shell.
(a) What is its rotational kinetic energy?
J

(b) What is the magnitude of its angular momentum?
kg · m2/s

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