Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities \omega_1 and \omega_2.They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is:- [NEET 2017]

Correct Answer is : 14I(ω1−ω2)2

Class 11 NEET Physics System of Particles and Rotational Motion

Question : 30 of 113

Marks: +1, -0

Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2.They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is:-

[NEET 2017]

1
4
I(ω1−ω2)2
I(ω1−ω2)2
1
8
(ω1−ω2)2
1
2
I(ω1+ω2)2

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