Can a Single Force Maintain Equilibrium?

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    Condition Equilibrium
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Discussion Overview

The discussion centers around the question of whether a body can be in equilibrium when only one force acts upon it. Participants explore the implications of a non-zero force in relation to equilibrium, considering both theoretical and conceptual aspects of the problem.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants assert that a body cannot be in equilibrium if a non-zero force is acting on it.
  • Others express uncertainty, suggesting the possibility of a trick question or a deeper interpretation of the conditions for equilibrium.
  • A participant introduces the idea that forces can be resolved into components, questioning whether the discussion should focus on resultant forces instead of a single force.
  • One participant emphasizes that the question is straightforward, reiterating that a single non-zero force cannot result in equilibrium.

Areas of Agreement / Disagreement

Participants generally agree that a single non-zero force cannot maintain equilibrium, but there are competing views regarding the interpretation of the question and the conditions for equilibrium.

Contextual Notes

Some participants mention the need to clarify definitions related to resultant forces and the conditions for equilibrium, indicating potential limitations in the original question's framing.

spaghetti3451
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Can a body be in equilibrium if only one force acts on it? I think it can't, if the force is non-zero. Thoughts?
 
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failexam said:
Can a body be in equilibrium if only one force acts on it?
What do you think?
 


Doc Al said:
failexam said:
Can a body be in equilibrium if only one force acts on it?

What do you think?

The following is what "failexam" thought:

failexam said:
I think it can't, if the force is non-zero.
 
failexam said:
I think it can't, if the force is non-zero.
Makes sense to me.
 
Well, I think the body can't be in equilibrium. That's the obvious answer. But I'm wondering if this might be a trick question. So ...
 
I see. Not a trick question, then!
 
Perhaps there is a twist to this question.

Can a body be said to have only one force acting one it?

Considering that any force can be resolved into component forces.

So perhaps we could talk about one net force or a non zero resultant or that there is a (single) resultant.

You have entitled this thread 'conditions for equilibrium' , so presumably that is what you are reading.

So perhaps the text is a bit slack and should read something like the conditions for a body to be in force equilibrium is that the resultant of any applied forces is zero or that the components are separately zero.
Moment equilibrium is something else again that should be considered.
 
I think the question is clear enough. A single non-zero force acts on a body. (Sure, you can break that force into components, but so what?) Can the body be in equilibrium? No.
 

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