Question

Write the formula of moment of inertia

Answer 1

Moment of inertia aka angular mass or rotational inertia can be defined w.r.t. rotation axis, as a quantity that decides the amount of torque required for a desired angular acceleration or a property of a body due to which it resists angular acceleration. The formula for moment of inertia is the “sum of the product of mass” of each particle with the “square of its distance from the axis of the rotation”. The formula of Moment of Inertia is expressed as I = Σ miri2.

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Answer 2

Moment of inertia gives the measure of difficulty of a particular body to rotate around an axis.

Moment of inertia also known as rotational inertia is calculated as the product of mass of each particle and the square of its distance from the axis of rotation.

Hence, the formula for moment of inertia can be written as,

I = mr².