How to determine the centre of mass of bodies from image modelling

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Dias, MA (Author) Other; Carvalho, PS (Author) FCUP; Rodrigues, M (Author) Other

Journal

Title: Physics Education

Vol. 51

Final page: 025001

ISSN: 0031-9120

Publisher: Institute of Physics Publishing

Indexing

Scopus - 9 Citations

Scientific classification

CORDIS: Physical sciences > Physics > Classical mechanics

FOS: Social sciences > Educational sciences

Other information

Authenticus ID: P-00K-JSY

DOI: 10.1088/0031-9120/51/2/025001

Abstract (EN): Image modelling is a recent technique in physics education that includes digital tools for image treatment and analysis, such as digital stroboscopic photography (DSP) and video analysis software. It is commonly used to analyse the motion of objects. In this work we show how to determine the position of the centre of mass (CM) of objects with either isotropic or anisotropic mass density, by video analyses as a video based experimental activity (VBEA). Strobe imaging is also presented in an educational view, helping students to visualize the complex motion of a rigid body with heterogeneous structure. As an example, we present a hammer tossed with translation and rotation. The technique shown here is valid for almost any kind of objects and it is very useful to work with the concept of CM. © 2016 IOP Publishing Ltd.

Language: English

Type (Professor's evaluation): Scientific