Angular momentum (L) can be defined by the relation L=r×p, where r is the position vector and p is the linear momentum (p=mv).
- Identify Dimensions of Constituents:
Mass (m): [M] Velocity (v): [LT−1]
- Radius/Distance (r): [L]
- Calculate Dimensions:
Substituting the dimensions into the formula L=mvr:
[L]=[M]×[LT−1]×[L]
[L]=[ML2T−1]
Alternatively, using the relation L=Iω (Moment of Inertia × Angular Velocity):
Moment of Inertia (I=mr2): [ML2] Angular Velocity (ω): [T−1]
[L]=[ML2]×[T−1]=[ML2T−1]