Which Diagram Represents Concurrent Forces?

[werson tan]

Homework Statement

Which is the correct diagram for concurrent forces? The left or the right one ?

Homework Equations

The Attempt at a Solution

 

[BvU]

Both diagrams are identical.

 

[werson tan]

Both diagrams are identical.

no , one is all the forces acted towards the circle , the another one is forces away from the circle..Which is the correct diagram for concurrent forces?

 

[BvU]

Ah, so there is a context.
My answer was based on the idea that a force can be moved along its line of action.
Apparently the circle represents something that can be deformed so that the above rule doesn't apply any more ?

 

[werson tan]

Ah, so there is a context.
My answer was based on the idea that a force can be moved along its line of action.
Apparently the circle represents something that can be deformed so that the above rule doesn't apply any more ?

assuming they are the similar circle , no deformation occur (rigid body)Which is the correct diagram for concurrent forces?

 

[BvU]

Sorry, I still don't get what this is about. What are concurrent forces ? And what would those forces be if they were not concurrent ? Countercurrent ? Cooperative ?

 

[BvU]

Ah ! Google to the rescue. Concurrent means the lines of actions are going through one single point

 

[BvU]

Really a good source, this google search: both pictures are concurrent forces. One is compressive.

See here (simple google!)

 

[BvU]

And now that we know what we are looking for: the inwards or outwards isn't the deciding factor. Protract the force lines and see if they go through one single point.

For experts only: the problem statement is incomplete if it doesn't state that the forces shown are coplanar !

 

[BvU]

I like to be liked, but I like it even better when a student understands. Was this a homework exercise where you reconstructed the original picture and you now know which feature is the one that requires the most attention ?

And now that I know you can post a drawing -- how are we doing with the torque equilibrium exercise ?

 

[werson tan]

I like to be liked, but I like it even better when a student understands. Was this a homework exercise where you reconstructed the original picture and you now know which feature is the one that requires the most attention ?

And now that I know you can post a drawing -- how are we doing with the torque equilibrium exercise ?

no, this is not an exercise . I just don't understand the notes given by my lecturer , and i ask here

 

[BvU]

I see. All clear now, I hope.