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# What is the angular momentum equation?

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### Quick Answer

The angular momentum formula is L = Iw, where the variable L represents the angular momentum, I is the moment of inertia, and w is the angular velocity. Angular momentum is a physics concept defined as the amount of rotation of an object in relation to its shape, speed and mass.

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### Full Answer

Angular momentum is a vector quantity that takes into account the rotational orientation of a body about a given axis. When a system of objects or particles comes into play, the angular momentum of the entire system is the sum of the angular momenta of the individual elements.

In usual cases, angular momentum of an object may be determined by using its resistance to rotational velocity changes and its angular velocity. In this scenario, the formula L = Iw may be used to determine the body's angular momentum. This measure is also termed as the moment of momentum, or the rotational analog of linear momentum.

Another variant of the angular momentum equation is L = rp, where r is the vector distance of the body from a reference axis of origin, and p is the linear momentum. This formula may be used if the given measurements are related to linear momentum, and it involves a cross product of the two vectors.

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