Smartphone-based measurement of magnetic force and demonstration of Newton third law of motion

TL;DR

This paper presents a novel educational method using smartphones and household items to measure magnetic forces, illustrating Newton's Third Law through tangible experiments.

Contribution

It introduces a practical approach for teaching Newton's Third Law by measuring magnetic forces with smartphone sensors and common household objects.

Findings

Students can measure forces and observe their equality and opposition.

The method enhances understanding of Newton's Third Law.

The approach is accessible and easy to implement in educational settings.

Abstract

A fascinating approach to teaching Newton's Third Law using readily available technology is presented in this article. Magnetic forces are measured by using a smartphone's pressure sensor, two ring magnets, and common household items. Students can measure the magnitudes of forces, gain a more tangible understanding of the law, and see how 'action' and 'reaction' are quantitatively equal and opposite.