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Must an object be rotating to have a moment of inertia?

User Boy
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1 Answer

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Not at all. The moment of inertia is a property of the object,
even if the object is wrapped in tissue in a box on the shelf.

Rotation is not a necessary condition for the existence of a
moment of inertia, any more than gravity is needed for an
object to have mass.
User Gareth Cornish
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