The Comparison of Gravitational Acceleration through Optical Sensor and Receptor Pad Apparatus

DOI

10.2991/icst-18.2018.178How to use a DOI?

Keywords

gravitional acceleration; free fall; optical sensor; mechanical switch

Abstract

The aim of this research is to compare the gravitational acceleration based on the two different apparatus measurement. That two apparatus are similar, use free fall setting. That difference is in time record method. This gravitational acceleration determined from metal ball fall’s time in a predetermined distance, measured by a series of an optical sensor (first apparatus) and mechanical switch (second apparatus). In the first apparatus, four pairs of optical sensors installed in a vertical metal alloy rod at an adjustable interval. The metal ball dropped by holding an electric magnet placed at the top of the rod. As the metal ball passes between two sensors, it interrupts the path of infrared light radiating from each sensor. In the second apparatus, the dropped ball mechanism is the same, different in time determination. Two plates are installed in the bottom of the rod as the mechanical switch, time will record when the up plate touches the bottom plate because of the ball’s hit. As the results, the gravitational acceleration from the first apparatus (optical sensor) is 9.823 ± 0.029 m/s2 and from the second apparatus (receptor pad) is 10.010 ± 0.025 m/s2.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Nadi Suprapto
AU  - Alif Syaiful Adam
AU  - Utama Alan Deta
AU  - Husni Mubarok
AU  - Abdul Kholiq
PY  - 2018/12
DA  - 2018/12
TI  - The Comparison of Gravitational Acceleration through Optical Sensor and Receptor Pad Apparatus
BT  - Proceedings of the International Conference on Science and Technology (ICST 2018)
PB  - Atlantis Press
SP  - 882
EP  - 886
SN  - 2589-4943
UR  - https://doi.org/10.2991/icst-18.2018.178
DO  - 10.2991/icst-18.2018.178
ID  - Suprapto2018/12
ER  -