what would be the value of 'g' ( gravitational acceleration) on the surface of earth if it's mass was twice as large and it's radius is half what it is how
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Concept : Gravitation
Original ‘ g ’ = GM/R²
According to the question , the mass is twice the original ones and radius is changed to half the original ones .
R = R/2 , M = 2M
⇒ g’ = ( G2M )/(R/2)²
⇒ g’ = 8GM/R²
⇒ g’ = 8g { GM/R² = g }
Value of g = 8 times the original value of g i.e 8g
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