- #1
bogoa
- 7
- 0
how can you determine if there is a moment and how does it works?
How can you determine if there is a moment and how does it works?
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Discussion Overview
The discussion revolves around understanding the concept of moments in physics, specifically focusing on how to determine the presence of a moment and the methods for identifying clockwise and counterclockwise moments, particularly in the context of couples and forces.
Discussion Character
- Exploratory, Technical explanation, Conceptual clarification
Main Points Raised
- One participant inquires about determining the existence of a moment and its workings.
- Another participant suggests that any force has a moment about any point not on its line of application, defining the moment's magnitude as Fd, where F is the force and d is the distance from the point to the line.
- A participant asks how to determine clockwise and counterclockwise moments in the context of couples.
- There is a clarification that a couple consists of equal and opposite forces, and that the direction (clockwise or counterclockwise) is usually specified or can be inferred visually based on the force's action relative to the pivot.
- One participant expresses gratitude and indicates they have understood how to determine the direction of moments based on the interaction of forces.
Areas of Agreement / Disagreement
The discussion includes some agreement on the definitions and methods for determining moments, but it also reflects uncertainty regarding specific examples and the clarity of determining clockwise versus counterclockwise moments.
Contextual Notes
Participants have not provided specific examples to illustrate their points, and there may be assumptions about prior knowledge of the concepts discussed, such as the definition of couples and the visual assessment of moments.
- #2
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
Welcome to PF!
Hi bogoa! Welcome to PF!
Do you mean the moment of a force?
Any force has a moment about any point that does not lie on the line of application of the force.
The moment has magnitude Fd, where F is the force and d is the distance from the point to the line.
Hi bogoa! Welcome to PF!
bogoa said:
Do you mean the moment of a force?
Any force has a moment about any point that does not lie on the line of application of the force.
The moment has magnitude Fd, where F is the force and d is the distance from the point to the line.
- #3
bogoa
- 7
- 0
ahh..but how can you determine the counter clockwise and clockwise method in moment of couples??
- #4
tiny-tim
Science Advisor
Homework Helper
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bogoa said:
Of couples?
If by couple you mean a pair of equal and opposite forces, then usually you'll be told whether it's clockwise or counter clockwise … how else would a couple be specified?
Or if you mean the moment of a single force, it's usually obvious whether it's clockwise or counter clockwise, just by looking at it … if the force is going clockwise of the pivot, then it's clockwise!
If that's not clear, give an example where you're not sure how to determine whether it's clockwise or counter clockwise.
- #5
bogoa
- 7
- 0
ah..thanks by the way..i've just got the answer my friend!now i can determine how to use counter and clockwise method by determining how the two force will react. and it will depend on the value of forces...
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