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The motion of spinning a...

The motion of spinning a hula hoop around one's hips can be modeled as a hoop rotating around an axis not through the center, but offset from the center by an amount h, where h is less than R, the radius of the hoop. Suppose Maria spins a hula hoop with a mass of 0.80 kg and a radius of 0.61 m around her waist. The rotation axis is perpendicular to the plane of the hoop, but approximately 0.39 m from the center of the hoop.

(a) What is the rotational inertia of the hoop in this case?

kg · m2(b) If the hula hoop is rotating with an angular speed of 14.5 rad/s, what is its rotational kinetic energy?

J

(a) What is the rotational inertia of the hoop in this case?

kg · m2(b) If the hula hoop is rotating with an angular speed of 14.5 rad/s, what is its rotational kinetic energy?

J

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