<P> therefore the second and third terms vanish, </P> <Dl> <Dd> L = ∑ i R × m i V + ∑ i r i × m i v i . (\ displaystyle \ mathbf (L) = \ sum _ (i) \ mathbf (R) \ times m_ (i) \ mathbf (V) + \ sum _ (i) \ mathbf (r) _ (i) \ times m_ (i) \ mathbf (v) _ (i).) </Dd> </Dl> <Dd> L = ∑ i R × m i V + ∑ i r i × m i v i . (\ displaystyle \ mathbf (L) = \ sum _ (i) \ mathbf (R) \ times m_ (i) \ mathbf (V) + \ sum _ (i) \ mathbf (r) _ (i) \ times m_ (i) \ mathbf (v) _ (i).) </Dd> <P> The first term can be rearranged, </P>

State the law of conservation of angular momentum