Experimental determination of configurational states present in conducting granular heap of disks

Authors

Sean Ivan S. Roxas National Institute of Physics, University of the Philippines Diliman
Matthew Joseph R. Banaag National Institute of Physics, University of the Philippines Diliman
Johnrob Y. Bantang National Institute of Physics, University of the Philippines Diliman

Abstract

We propose an experimental determination of configurational states present in a heap of conducting disks (Philippine five-peso coin, diameter d ≈ 27 mm) determined from the system's net resistance. The experimental setup consists of two conducting vertical bounding walls (height h ≈ 28.5 cm) and a nonconducting bottom floor (width w ≈ 40 cm) to support the heap that forms by dropping the disks one at a time and allowing it to rest on the previously existing heap. Resistance reading over different number of disks N in the heap shows a transition at about N = 50 for the given relative dimensions of the system. The resulting probability density estimate for the resistance values at N = 50 shows the prospect of multiple resistance values as an indication of configurational states of the heap.
We discuss the viability of the approach showing the qualitative similarity of the configurational states of the granular heaps including the possible degeneracy involved.

Downloads

Issue

2021: Proceedings of the 39th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2021-PB-02

Section

Poster Session B (Complex Systems, Photonics, and Interdisciplinary Topics)

Published

2021-10-02

How to Cite

[1]

SIS Roxas, MJR Banaag, and JY Bantang, Experimental determination of configurational states present in conducting granular heap of disks, Proceedings of the Samahang Pisika ng Pilipinas 39, SPP-2021-PB-02 (2021). URL: https://proceedings.spp-online.org/article/view/SPP-2021-PB-02.