Working with Materials > Defining Materials and Calculating Properties > To Calculate the Mass of a Part
  
To Calculate the Mass of a Part
1. Select one or more parts, right-click, and choose Edit Properties from the shortcut menu. The Part Properties dialog box opens.
2. On the left, click Material. The materials information opens on the right.
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If the part has a material assigned, its properties are calculated automatically. The results appear under Component Summary.
3. To view the data for the inertia tensor and the center of mass, click Inertia Tensor. The Moments Of Inertia dialog box opens.
4. To copy data to the clipboard, click in the Part Properties or Moments Of Inertia dialog box.