Physics · 2021
JEE Main · 24 February 2021, Shift 1 · Q2
Two stars of masses m and 2m at a distance d rotate about their common centre of mass in free space. The period of revolution is:
Two stars of masses m and 2m at a distance d rotate about their common centre of mass in free space. The period of revolution is :
Official answer
(2)
$\displaystyle 2 \pi \sqrt{\frac{\mathrm{~d}^3}{3 \mathrm{Gm}}}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.