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

The angular momentum of a moving body remains constant if

The angular momentum of a moving body remains constant if

The angular momentum of a moving body remains constant if

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

The angular momentum of body remains conserve if :

The angular momentum of body remains conserve if :

Under a constant torque, the angular momentum of a body changes from 2x to 5x in 8 sec. The torque acting on the body is

The angular momentum of a rotating body changes from A_(0) to 4 A_(0) in 4 min. The torque acting on the body is

The angular momentum of a rotating body changes from A_(0) to 4 A_(0) in 4 min. The torque acting on the body is