Q

Which is not a usual application of the universal law of gravitation in the source question?

RRB Group-D; RRB Group-D 01/12/2018 / Shift II; 15/10/2018 / Shift II 2018; 2018
✓ Answer: D Earth's motion around the Moon
The source selects D, contrasting it with the Moon orbiting Earth. More precisely, Earth and Moon both orbit their common centre of mass under gravity.
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