Two disc having moment of inertias `I1` & `I2` and angle velocities 'omega_1' & 'omega_2' are placed coaxially find total kinetic energy when they rotates with same angular velocity `I1 = 0.10 Kgm^(2)` `i2 = 0.20 Kgm^(2)`

Two bodies having moments of inertia I_(1) and I_2 (I_(1) gt I_(2)) have same angular momentum. If E_(1) and E_(2) are their rotational kinetic energies,

Two bodies have their moments of inertia I and 2I , respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular velocity will be in the ratio

Two bodies have their moment of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, their angular momentum will be in the ratio :

Two discs of moment of inertia 9kgm^2 and 3kgm^2 were rotating with angular velocity 6 rad/sec and 10 rad/sec respectively in same direction. They are brought together gently to move with same angular velocity. The loss of kinetic energy in Joules is______.