The discussion revolves around the concept of the first moment of mass, its relationship to the center of mass, and the distinction between the first moment and the moment of inertia. Participants explore definitions and mathematical formulations related to these concepts.
Participants exhibit some agreement on the definitions of the first moment and its relationship to the center of mass, but there remains uncertainty and debate regarding the interpretation and implications of these concepts.
Participants discuss the need for clarity on the definitions of terms such as "first moment" and "center of mass," as well as the importance of using position vectors in calculations. There are unresolved questions about the distinctions between the first moment and the center of mass.
Indeed it is.avito009 said:So is the second moment of mass "Moment of Inertia"?
That will give you the distance of the center of mass from some reference point (where the distances were measured from).avito009 said:According to Wikipedia, the first moment divided by the total mass is the center of mass. But as per what you say the first moment is mass times distance so if we divide that by the total mass we get the answer as distance. m*r/m=r. But distance is not the same as centre of mass. How?