mass moment of inertia for a solid sphere:
I = (2 /5) * mass * radius2
(mass in kg, radius in metres)
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the moment of inertia of a solid cylinder about an axis passing through its COM and parallel to its length is mr2/2 where r is the radius.
A sphere is a geometric solid because it has 3 dimentions.
A sphere is a solid with no edges.
Sphere ,because the sphere is roll if you put sphere in the table it can be roll. *_*
sphere