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Define moment of inertia. State its SI u...

Define moment of inertia. State its SI unit and dimensions.

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Moment of inertia of a rigid body about an axis of rotation is defined as the sum of product of each point mass and square of its perpenducular distance from the axis of rotation.
The S.I. unit of moment of inertia is kg. `m^(2)`.
The dimension of moment of inertia is `[M^(1)L^(2)T^(0)]`
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Knowledge Check

  • Dimensions of moment of inertia are

    A
    `[L^(2)M^(2)T^(-1)]`
    B
    `[L^(2)MT^(0)]`
    C
    `[LMT^(-1)]`
    D
    `[L^(2)M T^(-2)]`

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