Experimental analysis of a compound pendulum with variable suspension point

Physics Education
FRONTLINE

"Experimental analysis of a compound pendulum with variable suspension point"
Martín Monteiro, Cecilia Stari, Cecilia Cabeza and Arturo C Martí

Published 8 January 2020 • © 2020 IOP Publishing Ltd

Physics Education, Volume 55, Number 2
https://iopscience.iop.org/article/10.1088/1361-6552/ab606a




Abstract
A compound pendulum with variable point of suspension—and hence variable moment of inertia—is experimentally analysed. In particular, the period of the small oscillations as a function of position of the suspension point is measured using three different methods: a smartphone used both as an independent tool or as a data-logger and commercial photo-gate. The experimental results are successfully compared with two theoretical calculations—one of them taking all the dimensions into account and the other using a simplified geometry—based on the addition of moments of inertia and the parallel axis theorem.


Martín Monteiro et al 2020 Phys. Educ. 55 023004
Read full IOP paper (here)
Read full IOP paper (free access from Uruguay through Timbo)

Read full preprint paper (here)

Leer versión previa completa en español (aquí)


Más física con smartphones:
http://smarterphysics.blogspot.com


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