Question

The radius of planet A is half the
radius of planet B. If the mass of A is
M., what must be the mass of B so
that the value of g on B is half that of
its value on A?

Answer 1

Answer:

body of planet B should be 4 times M

Explanation:

since the value of g= GM/R²

hence

for plant A g=GM/(R/2)²=4GM/R²

and for planet B  g=Gm/R²

since the value of g is same for both

4GM/R²=Gm/R²

m=4M

I hope this helps you friend!