Consider the Following Four Objects: a Hoop, a Flat Disk

Consider the following four objects: a hoop, a flat disk, a solid sphere, and a hollow sphere. Each of the objects has mass M and radius R. The axis of rotation passes through the center of each object, and is perpendicular to the plane of the hoop and the plane of the flat disk. Which of these objects requires the largest torque to give it the same angular acceleration?

A) the solid sphere
B) the hollow sphere
C) the hoop
D) the flat disk
E) both the solid and the hollow spheres

Correct Answer:

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