Moon's radius is 1/4 that of earth and its mass is 1/80 times that of earth. If g represents acc

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7.Gravitation

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The moon's radius is $1/4$ that of the earth and its mass is $1/80$ times that of the earth. If $g$ represents the acceleration due to gravity on the surface of the earth, that on the surface of the moon is

A

$g/4$

B

$g/5$

C

$g/6$

D

$g/8$

Solution

(b)Using $g = \frac{{GM}}{{{R^2}}}$ we get ${g_m} = g/5$

Standard 11

Physics

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