Assertion: For the plantes orbiting around the sun, angular speed, linear speed, K.E. changes with time, but angular momentum remains constant.
Reason: No torque is acting on the rotating planet. So its angular momentum is constant.

Statement-1: For the planets orbiting around the sun, angular speed, linear speed, KE changes with time,but angular momentum remains constant. Statement-2: No torque is acting on the rotating planet, so its angular momentum is constant.

Total angular momentum of a rotating body remains constant, if the net torque acting on the body is

Total angular momentum of a rotating body remains constant, if the net torque acting on the body is

Show that the total angular momentum of a rotating system remains constant if no torque acts on the system.