Question

when is angular movement conserved

Answer 1

When no net torque acts on the system.

Answer 2

that is absolutely correct sir

Answer 3

i agree that is absolutely correct..oh wiat WILL-I-AM IS ME>?!?!?!?!

Answer 4

Angular momentum is conserved if and only if:
the net torque acting on the system is zero in every component
\[\tau_{net}=\sum_{i}^{} \tau_i =\frac{ dL }{ dt }= 0 \ \ (zero) \rightarrow L_{initial} = L_{final}\]