1. The problem statement, all variables and given/known data A person weighing 800N on Earth travels to another planter with twice the mass and twice the radius of the Earth. The person's weight on this other planet is most nearly... earth radius is 6,380,000m earth mass is 5,970,000,000,000,000,000,000,000kg 2. Relevant equations What is the person's weight on the other planet? 3. The attempt at a solution I thought it was still 800N because everything was doubled so it would proportionally be the same. It turns out the answer is 400N and I was hoping someone could explain why that is. thanks to anyone who tries.