Physics · 2018
JEE Main · 16 April 2018, Shift 1 · Q4
Two particles of the same mass m are moving in circular orbits because of force, given by F(r)=-16/r-r^3 The first particle is at a distance r =1,…
Two particles of the same mass m are moving in circular orbits because of force, given by
$$F(r)=\frac{-16}{r}-r^3
$$
The first particle is at a distance $\displaystyle \mathrm{r}=1$, and the second, at $\displaystyle \mathrm{r}=4$. The best estimate for the ratio of kinetic energies of the first and the second particle is closest to :
Official answer
(1)
$\displaystyle 6 \times 10^{-2}$
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.