The radius of a planet is 5 times the radius of Earth, but is of the same mass, so the value of g on the planet is:
Correct answer: D. g/25
- A. 5 g
- B. g/5
- C. g/20
- D. g/25
Explanation
Gravitational acceleration (g) on a planet depends on GM/ r2 As the radius of the planet is five times that of Earth, its g' = GM/ 25r2 Comparing both the value of g , their ratio = g'/g= 1/25 So the correct answer is option D.
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