Physics Question

Question

A man weighs 800N while on the surface of Earth. He is transported to another planet with the same mass, but radius that is three times greater than Earth’s radius. What will be his weight on this planet?

Answer 1

Gravitational force decreases with the square of distance.

Given that the man will be 3 times farther from the center of

gravity on the other planet than he was on Earth, his weight

will decrease 9-fold.

That is, he will weigh a bit under 89N.