Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Two discs have moments of intertia 
and 
about their respective axes perpendicular to the plane and passing through the centre. They are rotating with angular speeds, 
and 
respectively and are brought into contact face to face with their axes of rotation coaxial. The loss in kinetic energy of the system in the process is given by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
From conservation of angular momentum, we get
Solving above we get
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