According to Newton's Third Law of Motion and Newton's Law of Universal Gravitation, the force exerted by the first planet on the second planet is equal in magnitude to the force exerted by the second planet on the first planet. This holds true regardless of the masses or distances of the objects involved in the gravitational interaction.
The masses of two planets are in the ratio of 1 : 7. The ratio between their diameters is 2 : 1. The ratio of forces which they exert on each other is
Asked in UPSC NDA 2 2024 · Topic: Mechanics (Gravitation and Central Force Motion (Kepler's Laws))
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