Three different bodies-a uniform sphere, a uniform disk, and a hoop-all have same radius and same mass. The body with the largest rotational inertia will be
A) the sphere.
B) the disk.
C) the hoop.
D) none, as all have the same value of rotational inertia.

Question

Quizplus · Accepted Answer

The hoop has the largest rotational inertia because all of its mass is located at the maximum distance from the axis of rotation, which increases its moment of inertia compared to the sphere and disk where the mass distribution is closer to the axis.

Three Different Bodies-A Uniform Sphere, a Uniform Disk, and a Hoop-All