Comment on `The Newtonian force experienced by a point mass near a finite cylindrical source'

TL;DR

This paper evaluates and compares the computational efficiency and accuracy of three series expansions for calculating gravitational potential near a finite cylindrical source, highlighting the time-consuming nature of Selvaggi et al.'s method.

Contribution

It provides a comparative analysis of different series expansions for gravitational potential computation, focusing on their practical efficiency and precision.

Findings

Selvaggi et al.'s expansion is computationally slow.

The paper identifies more efficient series expansions for practical use.

Precision levels vary among the evaluated series expansions.

Abstract

We compare the computation times and precisions of three expansions for the gravitational potential. The evaluation of the series by Selvaggi et al (2008 \textit{Class. Quantum Grav.} \textbf{25} 015013) is time-consuming to be applied to the gravitational constant ($G$) or STEP experiments.