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May 13th, 2019, 09:12 PM   #1
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What are the names of these "F" arrows in these three diagrams?



What is the names of this "F" arrows in this three diagrams?

Last edited by skipjack; May 15th, 2019 at 04:47 AM.
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May 13th, 2019, 10:15 PM   #2
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What is the names of this "F" arrows in this three diagrams?
What more do you have for this problem? At a guess you are dealing with forces in 2 or 3 dimensions. So you have a component of force, $\displaystyle F_A$, pointing off in the "A direction." (Just like $\displaystyle F_x$ is a component of the force in the positive x direction.)

That's my best guess without more information.

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May 13th, 2019, 10:55 PM   #3
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I am asking only about the item labelled F .

Third diagram is resultant force. Second diagram is equilibrium. first diagram is confusing?
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May 14th, 2019, 06:06 AM   #4
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First diagram is poorly sketched and was probably meant to show the x and y components of F, but F does not have the requisite length for $F = F_x+F_y$.

Second diagram is $F + F_x + F_y = 0$, so yes, equilibrium.

Last diagram is $F = F_x - F_y$

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May 14th, 2019, 06:13 AM   #5
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Originally Posted by Ganesh Ujwal View Post
I am asking only about the item labelled F .

Third diagram is resultant force. Second diagram is equilibrium. first diagram is confusing?
That's why I usually use "R" for the resultant force. It helps to keep track of these things.

-Dan
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