A planet has a radius one-half that of Earth and a mass one-fifth the Earth's mass

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

26. A planet has a radius one-half that of Earth and a mass one-fifth the Earth's mass. The gravitational acceleration at the surface of the planet is most nearly (A) 4.0 m/s24.0 \mathrm{~m} / \mathrm{s}^{2} (B) 8.0 m/s28.0 \mathrm{~m} / \mathrm{s}^{2} (C) 12.5 m/s212.5 \mathrm{~m} / \mathrm{s}^{2} (D) 25 m/s225 \mathrm{~m} / \mathrm{s}^{2}

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