Question

acceleration due to gravity on surface of earth is g. What will be the acceleration due to gravity on the surface of a planet having same mass and diameter half as that of earth

Answer 1

sorry i m not dam sure about my answer .
But according to me

we know g = GM/R²

so g on the planet with same mass and half the radius will be

g=GM2²/R²







°•° where G=gravitational constant
M= mass of earth
and R=radius of earth.

Answer 2

Answer:

4g

Explanation:Mp(mass of planet)=Me(mass of earth)

Rp=Re/2

ge(acceleration due to gravity of earth)=GMe/Re²

gp=GMp/Rp²

    = GMe/(Re/2)²

    =GMe/Re²/4

    =4GMe/Re²

i.e. 4g