Physics · 2021
JEE Main · 26 August 2021, Shift 2 · Q10
The solid cylinder of length 80 cm and mass M has a radius of 20 cm. Calculate the density of the material used if the moment of inertia of the…
The solid cylinder of length $\displaystyle 80$ cm and mass M has a radius of $\displaystyle 20$ cm. Calculate the density of the material used if the moment of inertia of the cylinder about an axis CD parallel to AB as shown in figure is $\displaystyle 2.7 \mathrm{~kg} \mathrm{~m}^2$.
Official answer
(2)
$\displaystyle 1.49 \times 10^2 \mathrm{~kg} / \mathrm{m}^3$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.