This stuff is so confusing! I really wish I were better at math.... I had to take precalc math twice, so please try and dumb this down for me. 1. The problem statement, all variables and given/known data Communication satellites orbit the earth at a height of 35700km above the Earth's surface. What is the acceleration of an object due to the gravitational attraction by Earth at this height? The earth has a radius of 6.38x10^6m and a mass of 5.98x10^24kg Possible answers (m/s^2): 0.0028 0.0065 0.044 0.225 8.55 2. Relevant equations This is what I need to know?? 3. The attempt at a solution EDIT: I just found a table of varying g with altitude and it directly states that a satellite at that altitude has an acceleration of 0.225 m/s^2. Still, how are we supposed to find this without memorizing a table?