Locate the center of mass  z¯ of the assembly. The assembly consists of a cylindrical center core,  A , having a density of 8.10  Mg/m3 , and a cylindrical outer part,  B , and a cone cap,  C , each having a density of 3.50  Mg/m3 . (Figure 1) Express your answer to three significant figures and include the appropriate units.

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Center of Gravity and Centroid

The term center of gravity indicates the position or location of a point about which the whole weight of a body or system is supposed to be concentrated, which means the whole weight of the body or system works through this point. It is closely related to mass distribution. For all positions of the body, the center of gravity would be a single point.