Has 5 times the mass of the earth and also 5 times the radius. How does the gravitational acceleration on the surface of Driff compare to the gravitational acceleration on the surface of the earth?

The gravitational acceleration on earth is 5 times that on Driff.

Explanation:

The gravitational acceleration on earth is given as:

ge = Gm/r²

Where m = mass of earth, r = radius of earth.

The gravitational acceleration on Driff is given as:

gd = GM/R²

Where M = Mass of Driff, R = radius of Driff.

Since we're told that M = 5m and R = 5r:

gd = G*5m/(5r)²

gd = Gm/5r²

Comparing this to the gravitational acceleration on earth:

ge : gd = Gm/r² : Gm/5r²

ge:gd = 5:1

The gravitational acceleration on earth is 5 times that on Driff.

i don't know that i agree with that but what's the question ?