If an exoplanet like Kepler 442b, the most likely to be habitable exoplanet, has a mass 2.34x that of earth, would the gravity of the planet be 2.34x that of earth as well? Also, how would this affect humans if they were to travel there?

Question

If an exoplanet like Kepler 442b, the most likely to be habitable exoplanet, has a mass 2.34x that of earth, would the gravity of the planet be 2.34x that of earth as well? Also, how would this affect humans if they were to travel there?

In: Physics

Answer 1

Gravity is proportional to distance and mass. The earth is the densest large object in our solar system, so it has unusually high gravity relative to its mass. In fact, our core is so dense, that as you go below the surface, acceleration due to gravity actually goes up for awhile as you get closer to the core.

What all that means is a planet 2.34x earth’s mass would likely have higher surface gravity, but definitely not 2.34x.