Question

What will be the value of G if mass of the earth becomes four times:

Answer 1

Explanation:

Gravity is in g is equal to earth masses/earth radius^2. By increasing mass, we proportionally increase volume (assuming constant density). This means that 4 Earth would have a radius that is cube root 4 bigger than Earth. So due to the mass, the gravity increases by a factor of 4.

Answer 2

Answer:

G will remain constant because universal law of gravitation .The value that will change is of small g