wt would be the change in acceleration due to gravity at the surface, if the radius of the earth by 2% keeping the mass of the earth constant

Question

Answer

g = G m / R2  .The radius of eath decreases by 2 %, thereforeR' = R - 0.02 R = 0.98R.Now acceleration due to gravity will be :g' = GM / ( 0.98 R )2  = 1.04 gPercentage increase in acceleration due to gravity[(g' - g )/g ] x 100 = 4 %

Answer

decreases

Answer

u haven't mentioned that is radius has reduced or increased??

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