The acceleration due to gravity on a planet with mass and radius half of the Earth will be:
Correct answer: C. 19.6 m/sec2
- A. 4.9 m/sec2
- B. 9.8 m/sec2
- C. 19.6 m/sec2
- D. 2.45 m/sec2
Explanation
Gravitational acceleration on Earth = GM/R2 Gravitational acceleration on another planet with mass and radius half = G(0.5M)/0.25R2 Comparing both the g, their ratio will be, g'/g= 2/1The value of g on Earth is 9.81m/s2, so the value of g' will be 9.81 x 2 =19.6m/s2.Hence the correct option is C.
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