If the Sun were twice as massive,
A)its pull on the Earth would double.
B)Earth's pull on the Sun would double.
C)both
D)neither

Question

Quizplus · Accepted Answer

According to Newton's law of gravitation, the force of attraction between two bodies is directly proportional to their masses and inversely proportional to the square of their distance. If the mass of the Sun were doubled, its gravitational pull on the Earth would also double because the force of gravity is directly proportional to the mass. Similarly, the Earth's gravitational attraction towards the Sun would also increase because the force of gravity is also inversely proportional to the square of the distance between the two bodies. Therefore, both choices A and B are correct, and the best answer would be C) both.

If the Sun Were Twice as Massive