AIPMT PRELIMS 2005 Physics Acceleration due to Gravity MCQ Question
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then:
g' = 3g
g' = g/9
g' = 9g
g' = g/3
Correct Answer
Detailed Explanation
The gravitational acceleration on the surface of a planet is proportional to its radius if the density is constant. Hence, if the radius is 3 times larger, g' = 3g.
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