A highly modified version of <a href="//commons.wikimedia.org/wiki/File:Space_elevator_balance_of_forces.svg" title="File:Space elevator balance of forces.svg">File:Space elevator balance of forces.svg</a>. Improved with a circular Earth and more accurate force vectors.
Annotations refined to show the opposite effect for descending climbers.
<a href="//commons.wikimedia.org/w/index.php?title=User:Skyway&amp;action=edit&amp;redlink=1" class="new" title="User:Skyway (page does not exist)">Skyway</a>
GFDL
<a href="//commons.wikimedia.org/wiki/File:Space_elevator_balance_of_forces.svg" title="File:Space elevator balance of forces.svg">File:Space elevator balance of forces.svg</a>