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What is the formula for Moment of Inertia of a particle?

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Moment of inertia of a particle about an axis is equal to the product of the mass of the particle and square of its distance from the axis.

The formula for Moment of Inertia of a particle is given as,
Moment of inertia of the particle about the axis = mass of the particle (m) × distance of particle (r)
from the fixed axis

Formula for Moment of inertia of the particle about the axis =  mr2
The S.I. unit for moment of inertia is kg m2

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