1.

Two discs of moment of inertia I_(1) and I_(2) are rotating separately with angular velocities omega_(1) and omega_(2) respectively about perpendicular axis passing through their centres. If these two rotating discs are connected coaxially then the rotational kinetic energy of the composite system will be

Answer»

`(I_(1)omega_(1)+I_(2)omega_(2))/(2(I_(1)+I_(2)))`
`((I_(1)+I_(2))(omega_(1)+omega_(2)))/(2)`
`((I_(1)omega_(1)+I_(2)omega_(2))^(2))/(2(I_(1)+I_(2)))`
`((I_(1)+I_(2))(omega_(1)+omega_(2))^(2))/(2)`

ANSWER :C


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