Physics · 2017
NEET 2017 · 7 May · Code A · Q39
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular…
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 $\displaystyle \omega_1$ and $\displaystyle \omega_2$. They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle \frac{1}{4} \mathrm{I}\left(\omega_1-\omega_2\right)^2$
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NEET (UG) 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.