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## Homework Statement

for electric fields i know total flux through a closed surface is proportional to tot. charge enclosed..goes ssame for gravt. fields. total gravitational flux through a closed surface is proportional to total mass enclosed. Now there's the next equation that says if a charge moves in an electric field from a point through any route back to its point of origin change in electric potential is 0. I'm trying to get the equivalent of that for gravitational fields. Help is greatly appreciated

## Homework Equations

Change in gravitational potential

## The Attempt at a Solution

I thought i'd write Sum. g. dr = 0...i really don't know...help please