I used a Sodin Gravimeter to measure the relative gravity of a building with 14 floors. I am wondering on how I use the relative gravity to find absolute gravity? Information: Height difference of each floor is 3.95m Each floor weighs 106kg For example, on the basement floor, the reading was 62.14mgal, the 1st floor was 61.90mgal, and 3rd floor was 60.18mgal (these converted would be 6.214*10-4m/s2, 6.190*10-4m/s2, 6.018*10-4m/s2, respectively . How do I use this information to find the absolute gravity? Δg/g = (-2ΔR)/R g = (G*m)/R2 I found Δg by finding the difference of relative gravity. After that, I dont know what to do. The goal of this lab is to find the radius of earth, but I dont know how. Please help. Just tell me what to do, I dont need an answer. Thank you.