Angular Momentum (L = Iω)
Enter your known values, leave one input blank, and solves for the missing one. Try different units for next level excitement!
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Angular momentum is the conserved quantity of the spinning world: with no external torque, L = Iω stays fixed. Pull your arms in on a spinning chair and I drops, so ω must rise — the figure skater's trick. The same law spins up collapsing stars: when a stellar core shrinks to a neutron star a few kilometers across, its tiny new I forces rotation rates of hundreds of revolutions per second.
Angular Momentum (L = Iω)
Where
- = Angular momentum
- = Moment of inertia
- = Angular velocity
Missing one of these? Work it out first, then come back
- Moment of inertia — Newton's Second Law for Rotation (τ = Iα), Rotational Kinetic Energy
- Angular velocity — Angular Velocity (ω = θ/t), Angular Velocity from Period