1. The problem statement, all variables and given/known data A sensitive gravimeter is carried to the top of Chicago's Sears Tower, where its reading for the acceleration of gravity is 0.00136 m/s^2 lower than at street level. Find the height of the building. 2. Relevant equations F = GMm/(r^2) and maybe K + U = K_o + U_o 3. The attempt at a solution don't know where to start!