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If the acceleration due to gravity on the surface of the earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of earth is _________________.
  • a)
    2g
  • b)
    g
  • c)
    g/2
  • d)
    4g
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
If the acceleration due to gravity on the surface of the earth is g, ...
Acceleration due to gravity on earth g = G ME/r2Let another planet acceleration due to gravity g’ = G2ME/r2
Hence, g’g = (G2MEr2)/GMEr2
g’/g = 2
G’ = 2g.
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