Question Detail
Question
The free fall acceleration on the surface of Mars is 3.7 m/s². Determine the radius and the average density of Mars.
Correct Answer
Option A is the correct answer.
Detailed Explanation
Using g = GM/R² and M = (4/3)πR³ρ, we get g = (4/3)πGρR. With known values, Mars radius ≈ 3.4 × 10⁶ m and density ≈ 3.9 g/cm³.
Hint
Relate g, R, and ρ through g = (4/3)πGρR.