Physics · 2026
JEE Main · 4 April 2026, Shift 2 · Q35
A uniform disc of radius R and mass M is free to oscillate about the axis A as shown in the figure. For small oscillations the time period is ____.…
A uniform disc of radius $\displaystyle R$ and mass $\displaystyle M$ is free to oscillate about the axis $\displaystyle A$ as shown in the figure. For small oscillations the time period is $\displaystyle \_\_\_\_$.
(g is acceleration due to gravity)
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 2 \pi \sqrt{\frac{5 R}{4 g}}$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.