Two discs are rotating about an axis as shown in the figure. The moment of inertia
of the right disc is 2 kg m2 and it rotates with angular speed of 2000 rpm. The
moment of inertia of the left disc is 5 kg m2 and it rotates in the opposite direction
with angular speed of 100 rpm. The discs are suddenly clamped together.
Determine the final common angular speed of the clamped discs.
