If the masses of two planets doubles and the distance between them reduces by half,the force between them would be
A)unchanged.
B)half as much.
C)twice as much.
D)four times as much.
E)none of the above

Question

Quizplus · Accepted Answer

The gravitational force is proportional to the product of the masses and inversely proportional to the square of the distance. Doubling both masses increases the force by a factor of 4, and reducing the distance by half increases the force by a factor of 4, resulting in a total increase by a factor of 16.

If the Masses of Two Planets Doubles and the Distance