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CBSE - XI Science - Physics - System of Particles and Rotational Motion

derive a relation between angular momentum and law of inertia. hence define moment of inertia.

Asked by Jisha Mary Thomas 10th September 2013, 7:14 PM
Answered by Expert

Answer:

We know that

Angular momentum is given by,

L = mv *r

= (mr2)(v/r)

= I?

Where, I = moment of inertia = mr2

? = v/r = angular velocity.

Moment of inertia of a body about a given axis is the sum of the products of masses of all the particles of the body and squares of their respective perpendicular distance from the axis of rotation. It is a rotational analog of the mass of a body.

It is given as

I = MR2

where M is the mass of the body and R is its rotational radius.

Answered by Expert 11th September 2013, 2:28 PM

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