Question

Angular momentum of a system of particles:
(a) Must be conserved if mechanical energy of the system is
conserved
(b) Must not be conserved if mechanical energy of the system is
not constant
(c) Must be conserved if net external force on the system is zero
(d) May be conserved even if net external force on the system is
non-zero​

Answer 1

Answer:

C is correct.

Explanation:

Because According to Law Of Conservation Of Angular Momentum if net torque acting on body is zero then Angular Momentum is constant or conserved.