That was the problem of the attraction of an ellipsoid, which was first studied in depth by Ivory whose solution was later generalised by Poisson . Amsler extended the theorems of both Ivory and Poisson on this topic.
Na ang mga problema ng akit ng isang ellipsoid, na kung saan ay unang-aral sa kaibuturan ng Ivory na ang solusyon ay generalised mamaya sa pamamagitan ng Poisson. Amsler extended ang theorems ng parehong Ivory at Poisson sa paksang ito.