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PhysicsJEE Main 24 Jan 2026, Shift 1·Q20·MCQ·Easy–moderate

Gravitation · Potential energy, potential, escape, satellites

Three masses 200 kg, 300 kg and 400 kg are placed at the vertices of an equilateral triangle with sides 20 m. They are rearranged on the vertices of a bigger triangle of side 25 m and with the same centre. The work done in this process is J.
(Gravitational constant G=6.7×10−11 N m2/kg2G = 6.7\times10^{-11}\ \mathrm{N\,m^2/kg^2})
  1. (1)9.86×10−69.86\times10^{-6}
  2. (2)2.85×10−72.85\times10^{-7}
  3. (3)1.74×10−71.74\times10^{-7}
  4. (4)4.77×10−74.77\times10^{-7}
We corrected a printing error in the original paper

Source printed “The work done in this process ___ J” (“is” missing).

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