Question

What will be the value of g 8f mass was twice and radius is half
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Answer 1

g will become 8 time if the mass was doubled and radius was made half

Explanation:

Let mass of object be = M

The distance be = R

M' = 2M

R' = R/2

g = G×M/R^2

g' = GM'/(R')^2

g' = G×(2M)/(R/2)^2

g' = 2[GM/(R^2/4)]

g' = 8[GM/R^2]

g' = 8g

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