if the diameter and mass of the earth becomes two times their present values then the weight of the object

if the diameter and mass of the earth becomes two times their present

1.	if the diameter and mass of the earth becomes two times their present values then the weight of the object
Answer» When diameter BECOMES 2 times ,the radius of earth will also becomes 2 times. we know that gravitational FORCE due to earth is directly proportional to its mass and inversely proportional to its radius. so let its WEIGHT was w and now it's w'. so w/w' = (M/R^2)/(M'/R'2)=MR'^2/M'R'^2. we are given M'=2M and R'=2R so w/w'=M(2R)^2/2MR^2 w/w'=4MR^2/2MR^2 w/w'=2 or w'=2w. It shows that weight becomes TWICE.

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if the diameter and mass of the earth becomes two times their present values then the weight of the object

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