Using Mass PropertiesKeyCreator \ Verify \ Mass-Properties \ Using-Mass-Properties
Select Mass Properties from the Tools>Verify options. You will be prompted to select the solid object(s) to analyze.
Using the Function:
As you tab to a new field after entering a value, the Mass Properties fields update based on the data you just entered. In addition to calculating the weights and properties of each object, a Total listing calculates the sum total of all objects selected (e.g., the total weight of an assembly) and displays those results in the Total tab. To view a point entity at the center of mass choose the Model Center of Mass button. To view a point entity at the Model Principal Axis choose the Model Principle Axis button.