Which of the following has the largest moment of inertia?
A. A cylinder of mass M with a radius R rotating about its central axis.
B. A hoop of mass M with a radius R rotating about the axis perpendicular to the plane of the hoop and passing through its center.
C. A hoop of mass M with a radius R rotating about a line through its diameter and parallel to the plane of the hoop.
D. A cube of mass M and sides 2R rotating about a line passing through the center of two opposite sides.
E. A rod of mass M and length 2R rotating about a line passing through the center and perpendicular to the rod.
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Expert's answer
2020-10-21T09:54:02-0400
Solution
(B) A hoop of mass M with a radius R rotating about the axis perpendicular to the plane of the hoop and passing through its center has largest moment of inertia. It's moment of inertia is given as
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