1. The problem statement, all variables and given/known data In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you weigh 520 N, to the top of the building. 2. Relevant equations a = Gm/R^2 3. The attempt at a solution g = Gm/R^2, so I used 6.67E-11 for G, the mass of the earth (5.97E24) for m, and the radius of the earth plus the distance from earth's surface (1 mile, which is about 1609 meters) for R. I calculated all that and got about 9.77 for g and then found weight and subtracted it from 520, but it was wrong. What's the deal?