Momentum of a free falling object

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Homework Help Overview

The discussion revolves around the concept of momentum in the context of a free-falling object, specifically focusing on the momentum of the weight force relative to the object's center of mass.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between the weight force and the center of mass, questioning whether the momentum or moment of the weight force is zero due to its line of action passing through the center of mass.

Discussion Status

Some participants express agreement on the notion that the momentum or moment is zero, while others seek further clarification and detailed explanations regarding the reasoning behind this conclusion. There is an indication of productive dialogue, with suggestions for additional mathematical context.

Contextual Notes

There appears to be some confusion regarding the terminology used in the original question, with participants questioning whether "momentum" was intended to be "moment." Additionally, the discussion reflects an assumption that the weight force always acts through the center of mass.

nebbione
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Homework Statement


In a physics exam I have this question: "what is the momentum of the weight force of an object in a free fall relative to its center of mass?"


Homework Equations


Is my answer right ?


The Attempt at a Solution


My answer is: "If we try to calculate the momentum, the center of reduction coincides with the center of mass, and the line of action of the force passes through the center of reduction, so the momenut is canceled"
 
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what is the momentum of the weight force of an object in a free fall relative to its center of mass?

I assume that should read..

"what is the moment of the weight force of an object in a free fall relative to its center of mass?"

Isn't the moment of the weight force allways zero because it allways acts through the center of mass?
 
Ok yes i know that is zero the answer but can you explain me in details why ? (try to re-read my attempt at answering the question)
 

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