In the same way that objects in linear motion tend to remain that way, objects which are rotating tend to keep rotating. Thus, we need both linear and angular (rotational) motion.
angular momentum and angular velocity
angular momentum is the measure of angular motion in a body.
Angular momentum is the moment of momentum, a conserved vector quantity used to state the overall condition of a physical system.
The "intrinsic angular momentum" of particles is commonly called "spin". The spin of a photon is 1, in the units commonly used.
These are used in lots of engineering problems related to rotation.
As there is no external torque acting on it, its angular momentum remains constant. This is according to the law of conservation of angular momentum
angular mmtm is a cross product unlike linear momentum
when we churn and make out butter milk out of curd, here we apply angular momentum ceiling fan is another example of angular momentum
Rotating objects all have angular momentum.
Torque is the rate of change of angular momentum.
The moment of linear momentum is called angular momentum. or The vector product of position vector and linear momentum is called angular momentum.
More or less. There is a law of conservation of angular momentum, according to which Earth can't gain or lose angular momentum on its own - if for example it loses angular momentum, it has to go somewhere. A meteor who falls into the Earth, or a rocket leaving the Earth can change Earth's angular momentum - but the total angular momentum (e.g., of the system meteor + Earth) is the same, before and after the impact.