Physics · 2021
JEE Main · 31 August 2021, Shift 1 · Q17
The masses and radii of the earth and moon are ( M_1, R_1) and ( M_2, R_2) respectively. Their centres are at a distance ' r ' apart. Find the…
The masses and radii of the earth and moon are $\displaystyle \left(\mathrm{M}_1, \mathrm{R}_1\right)$ and $\displaystyle \left(\mathrm{M}_2, \mathrm{R}_2\right)$ respectively. Their centres are at a distance ' $\displaystyle \mathrm{r}$ ' apart. Find the minimum escape velocity for a particle of mass ' $\displaystyle m$ ' to be projected from the middle of these two masses :
Official answer
(3)
$\displaystyle V=\sqrt{\frac{4 G\left(M_1+M_2\right)}{r}}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.