A planet has one-fifth the mass of Earth and half the radius of Earth

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A planet has one-fifth the mass of Earth and half the radius of Earth. What is the approximate value of gg on this planet’s surface? (a) 12.3 m/s212.3\,\text{m/s}^2 (b) 3.9 m/s23.9\,\text{m/s}^2 (c) 7.8 m/s27.8\,\text{m/s}^2 (d) 8.8 m/s28.8\,\text{m/s}^2

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