Force in a point

I have to create arches using the lines I have already created so my question is: there’s a way to put forces (maybe using kangaroo/kangarro2) in just one point (preferably a different point for each line) in order to move this point through the z axis and create an arch with the entire line? (9.1 KB)
kang.3dm (124.8 KB)

You could evaluate the lines with a different t parameter each and then move the point with equally many z-vectors