Planet a Has Twice the Mass of Planet B

question 27

Multiple Choice

Planet A has twice the mass of Planet B.From this information,what can we conclude about the acceleration due to gravity at the surface of Planet A compared to that at the surface of Planet B?

• A)The acceleration due to gravity on Planet A must be twice as great as the acceleration due to gravity on Planet B.
• B)The acceleration due to gravity on Planet A must be four times as great as the acceleration due to gravity on Planet B.
• C)The acceleration due to gravity on Planet A is the same as the acceleration due to gravity on Planet B.
• D)The acceleration due to gravity on Planet A is greater than the acceleration due to gravity on Planet B,but we cannot say how much greater.
• E)We cannot conclude anything about the acceleration due to gravity on Planet A without knowing the radii of the two planets.

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