https://ph01.tci-thaijo.org/index.php/jermutt/issue/feed 2025-04-02T08:50:37+07:00 ผศ.ดร.ปรกช สิริสุวัณณ์ enjournal@en.rmutt.ac.th Open Journal Systems <p>Frontiers in Engineering Innovation Research has ISSN 3056-9273 (Online). It has published the high quality of article on physical science and technology which emphasize on engineering research. The target groups of the publication consist of lecturer, under graduate student, graduate student and researcher whose are the insider and third party of Rajamangala University of Technology Thanyaburi. This journal has published 2 issues per year such as the issue number 1 on January to June and the issue number 2 on July to December. </p> https://ph01.tci-thaijo.org/index.php/jermutt/article/view/258078 2025-01-24T10:56:43+07:00 Bancha Kongtragool bancha@northcm.ac.th Saichon Sithipong saichon@northcm.ac.th

<p>Engineering calculations requiring precise gravity measurements for accurate outcomes must consistently use the local gravitational acceleration. This article presents the results of determining local gravity by applying Newton's second law to a simple pendulum as a gravimeter. The study was conducted at a location of latitude 18°39’43’’ N and an altitude of 300 m AMSL. Results from this study indicated, that by using the simple pendulums of lengths of 1.00 m, 1.05 m, 1.10 m, 1.15 m and 1.20 m and timing 100 oscillation cycles, the experimental local gravity obtained was 9.7635±0.006 m/s². Compared with the calculated local gravity 9.7847 m/s², the error of the local gravity obtained was 0.2%, approximately.</p>

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