Angular momentum

Velocity of the particle m with respect to the origin O can be resolved into components parallel to (v//) and perpendicular to (v⊥) the radius vector r. The angular momentum of m is proportional to the perpendicular component v⊥ of the velocity, or equivalently, to the perpendicular distance r⊥ from the origin.

Moment of inertia (shown here), and therefore angular momentum, is different for every possible configuration of mass and axis of rotation.

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important quantity in physics because it is a conserved quantity – the angular momentum of a system remains constant unless acted on by an external torque.

单词	Moment of momentum
释义	Moment of momentum 英语百科 Angular momentum In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important quantity in physics because it is a conserved quantity – the angular momentum of a system remains constant unless acted on by an external torque.
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Moment of momentum

Angular momentum