A simple, low-cost, data-logging pendulum built from a computer mouse

TL;DR

This paper introduces a low-cost, easy-to-assemble pendulum device using a computer mouse's hardware, enabling affordable hands-on physics experiments on pendulum motion and damping for educational settings.

Contribution

The paper presents a novel, inexpensive pendulum apparatus built from a computer mouse, making physics experiments more accessible in resource-limited educational environments.

Findings

Successfully measures pendulum frequency and damping coefficient

Demonstrates feasibility of using computer mouse hardware for physics experiments

Provides an affordable alternative to commercial laboratory equipment

Abstract

Lessons and homework problems involving a pendulum are often a big part of introductory physics classes and laboratory courses from high school to undergraduate levels. Although laboratory equipment for pendulum experiments is commercially available, it is often expensive and may not be affordable for teachers on fixed budgets, particularly in developing countries. We present a low-cost, easy-to-build rotary sensor pendulum using the existing hardware in a ball-type computer mouse. We demonstrate how this apparatus may be used to measure both the frequency and coefficient of damping of a simple physical pendulum. This easily constructed laboratory equipment makes it possible for all students to have hands-on experience with one of the most important simple physical systems.