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Two particles of the same mass m are moving in circular orbits because of force, given by F (r)=- 16 - ^3. The first particle is at a distance r=1,…

JEE Main 2018 — Physics Mechanics

2018mcqmedium

Two particles of the same mass mmm are moving in circular orbits because of force, given by F(r)=−16r−r3F (r)=-\frac{16}{r}-{r}^{3}F(r)=−r16​−r3. The first particle is at a distance r=1r=1r=1, and the second, at r=4r=4r=4. The best estimate for the ratio of kinetic energies of the first and the second particle is closest to

Official previous-year question

Held on 16 Apr 2018 · Verified 6 Jul 2026.

Options

  1. A

    3×10−33 \times {10}^{-3}3×10−3

  2. B

    6×1026 \times {10}^{2}6×102

  3. C

    6×10−26 \times {10}^{-2}6×10−2

  4. D

    10−2{10}^{-2}10−2

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