Physics · 2020
JEE Main · 9 January 2020, Shift 1 · Q4
Three solid spheres each of mass m and diameter d are stuck together such that the lines connecting the centres form an equilateral triangle of side…
Three solid spheres each of mass m and diameter d are stuck together such that the lines connecting the centres form an equilateral triangle of side of length d. The ratio $\displaystyle \mathrm{I}_0 / \mathrm{I}_{\mathrm{A}}$ of moment of inertia $\displaystyle \mathrm{I}_0$ of the system about an axis passing the centroid and about center of any of the spheres $\displaystyle \mathrm{I}_{\mathrm{A}}$ and perpendicular to the plane of the triangle is :
Official answer
(1)
$\displaystyle \frac{13}{23}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.