Question
Thu October 13, 2011 By:

An imaginary planet has a mass 5 times and radius 3 times that of the earth.what is the acceleration due to gravity on the planet,if the acceleration due to gravity on earth is 10 m/s2

Expert Reply
Thu October 13, 2011
We know that, g = GM/ R2
Therefore, g' (acceleration due to gravity of imaginary planet) = G (5 M)/(3R)2
or, g' = 5GM/ 9R2
or, g' = (5/9)g = 5.6 m/s2
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