English: The cross-section of an I-beam with dimensions for calculating the section modulus. The arrow indicates that the section modulus is being calculated for the weak axis.
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2008-11-29T23:24:28Z Zielu20 272x187 (10793 Bytes) {{Information |Description={{pl|1=Grafika do zagadnienia: Geometryczny moment bezwładności}} |Source=Praca własna osoby przesyłającej (own work by uploader) |Author=[[User:Zielu20|Zielu20]] |Date=30/11/08 |Permission= |o