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MCQIntermediateOrbits, Gravitation & Dynamics
BAAO — 2019 Astronomy & Astrophysics Challenge
Question 7
Earth’s moon has a radius of 1737 km and Titan (one of Saturn’s moons) has a radius of 2576 km. At the surface, their gravitational field strengths, g, are 1.63 N kg⁻¹ and 1.35 N kg⁻¹ respectively. Determine the ratio of masses, M₍Titan₎/M₍Moon₎, given g ∝ M/R².
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Source
Source: British Astronomy and Astrophysics Olympiad (BAAO), Astronomy & Astrophysics Challenge 2019. Question text, answer-choice text, and answer were transcribed from the official BAAO paper and solutions PDFs; the explanation and metadata are original.