What would happen to the gravitational force on Earth if the Sun were to be replaced by a 1-solar-mass black hole?
A) The gravitational force on Earth would become extremely high, sufficient to pull Earth into the black hole.
B) The gravitational force on Earth would double in strength.
C) The gravitational force on Earth would remain as it is now.
D) The gravitational force on Earth would be much less because the gravitational field of a black hole exists only very close to it.

Question

Quizplus · Accepted Answer

The gravitational force that any two objects exert on each other depends on their masses and the distance between them. If the Sun were replaced by a black hole of the same mass (1 solar mass), the gravitational force it exerts on Earth would remain unchanged because both the mass and the distance between the Earth and the black hole would be the same as they were with the Sun.

What Would Happen to the Gravitational Force on Earth If