Determination of the acceleration due to gravity by studying magnet s motion through a conducting pipe

TL;DR

This paper introduces a novel method to measure gravitational acceleration using smartphone-based magnetic sensors and video analysis, integrating magnetism, terminal velocity, and electromagnetic damping.

Contribution

It presents a new experimental approach combining magnetic sensors and video analysis to determine gravity and related magnetic properties.

Findings

Measured gravitational acceleration using smartphone sensors.

Determined magnetic moment from torsional oscillations.

Analyzed electromagnetic damping effects on falling magnets.

Abstract

We determine the acceleration due to gravity (g) in a novel way using a magnetic sensor and video analysis technique of a smartphone. The same applications are used to measure the terminal velocity of a magnet falling through a conducting pipe and the magnetic moment of the magnet from its torsional oscillations. This experiment would appear to be intriguing, as it combines elements of magnetism, terminal velocity, and electromagnetic damping to determine g.