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Angular momentum
L = r x p = rmvsinΦ
Cross-product: 3 way (i, j, k), results in k vector
Ang. momentum & velocity
L = Iω
Torque (vector)
τ = r x F
Gyroscopic precession
When already-spinning objects rotate in unexpected ways, where their momentum vector “follows” the force/torque vector
Precessional frequency
ωr = MgrCM/Iω