Question

if the earth suddenly shrinks by one third of its radius the acceleration due to gravity will be​

Answer 1

Answer:

G=GM/R^2

Then r=R/3

So,g'=GM/r^2=GM*9/R=9g

So,g'=9g

Answer 2

Explanation:

If the earth suddenly shrinks (without changing mass) to half of its present radius, then acceleration due to gravity will be. Solution : g=GMR2, If radius shrinks to half of its present value, then g will become four times.