Law of conservation of angular momentum

Two discs of moments of inertia I_(1) and I_(2) about their respective axes (normal to the disc and passing through the centre) and rotating with angular speeds omega_(1) and omega_(2) are brought into contact face to face with their axes of rotation coincident. (a) Does the law of conservation of angular momentum apply to the situation ? Why ? (b) Find the angular speed of the two-disc system. (c ) Calculate the loss in kinetic energy of the system in the process. (d) Account for this loss.

Torgue and angular momentum relation, Application of conservation of angular momentum.

State the principle of conservation of angular momentum.

Angular momentum of a particle | Angular momentum of a rigid body in pure translation | FAOR | GRBM-General Rigid Body Motion | Torgue and angular momentum relation | Application of conservation of angular momentum | Rod particle collisions

According to the principle of conservation of angular momentum, if moment of inertia of a rotating body decreases, then its angular velocity

Assertion : In keplar's law conservation of angular momentum does not take place. Reason : Gravitation force acting between earth and the sun is perpendicular to line joining them.

Assertion: Kepler's second law can be understood by conservation of angular momentum principle. Reason: Kepler's second law is related with areal velocity which can further be proved to be used on coservation of angular momentum as (dA//dt)=(r^(2)omega)//2 .