in a far - off galaxy, an astronomer observes a moon orbiting a planet. the moon stays in orbit because of…

in a far - off galaxy, an astronomer observes a moon orbiting a planet. the moon stays in orbit because of the planets gravity. which scenario would increase the gravity of the planet?\n○ decreasing the distance between the moon and the planet\n○ increasing the distance between the moon and planet\n○ increasing the planets inertia\n○ increasing the moons inertia

in a far - off galaxy, an astronomer observes a moon orbiting a planet. the moon stays in orbit because of the planets gravity. which scenario would increase the gravity of the planet?\n○ decreasing the distance between the moon and the planet\n○ increasing the distance between the moon and planet\n○ increasing the planets inertia\n○ increasing the moons inertia

Answer

Brief Explanations:

The gravitational force between two objects is given by Newton's law of universal gravitation $F = G\frac{Mm}{r^{2}}$, where $G$ is the gravitational constant, $M$ and $m$ are the masses of the two - objects, and $r$ is the distance between their centers of mass. Inertia is related to mass. Increasing the mass (inertia) of the planet ($M$) will increase the gravitational force it exerts. Decreasing the distance $r$ between the moon and the planet also increases the gravitational force, but the question asks about increasing the planet's gravity, which is more directly related to the planet's mass (inertia).

Answer:

increasing the planet's inertia