Angular Momentum
Reference from the original Physics I textbook.
- Angular Momentum
Angular momentum of a particle about a chosen point O is H⃗_O = r⃗ × p⃗. It can be zero even for a moving particle, for example when its momentum is parallel to r⃗.
- Related Glossary Terms
Angular Momentum Equation, Angular Momentum of a Rigid Body Equation, Conservation of Angular Momentum (Inertia Definition), Conservation of Angular Momentum Equation, Table 6.4.1: Linear vs. Angular Equations
- Index
Reviewed physics notes (1)
These corrections keep the original lesson’s purpose while fixing errors in the source edition.
- Source claims any body with mass, velocity and position necessarily has nonzero angular momentum. — Reference 1
Glossary and deeper reading · 1 refreshers
These editorial refreshers supplement the reading. Definitions and examples are added guidance; original source wording and recorded answers remain in their original context.
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Angular momentum
Angular momentum describes motion about a specified point or axis. For rigid rotation about a fixed principal axis it can be written as rotational inertia times angular velocity; a translating particle can also have angular momentum about a point. For example, a ball moving past a pole has angular momentum about the pole even though the ball’s path is straight.