Definition:Angular Momentum

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The angular momentum of a body about a point $P$ is its moment of inertia $I$ about $P$ multiplied by its angular velocity $\omega$ about $P$:

$L = I \omega$

Angular momentum is a vector quantity.


The dimension of measurement of angular momentum is $\mathsf {M L}^2 \mathsf T^{-1}$.

Also known as

Angular momentum is also (rarely) known as moment of momentum or rotational momentum.

Also see

  • Results about angular momentum can be found here.

Linguistic Note

The plural of momentum is momenta.