The gravitational force between two objects is 100 N. If the mass of each object is doubled, what is the gravitational force between the objects at the same distance?

Newton’s law of gravitation says the force is proportional to the product of the two masses when distance stays the same. Doubling each mass makes that product four times larger: 100 N × 2 × 2 = 400 N. Therefore, the force is 400 N, choice C.

AI-written and checked against the verified answer.