Solving Moments of Force: Finding A & B

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SUMMARY

The discussion focuses on solving for the forces A and B using the principles of moments in static equilibrium. The participant initially attempted to calculate the force at point B using the equation for moments but overlooked the moment caused by a 2kN force at the left end. Correctly applying the equation Ʃ Of Clockwise Moments = Ʃ Of Anti-Clockwise Moments is essential for accurate results. The participant is encouraged to consider all forces and their respective distances from the pivot point A for a comprehensive solution.

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  • Understanding of static equilibrium principles
  • Familiarity with calculating moments of force
  • Knowledge of basic physics equations related to forces
  • Ability to interpret diagrams of force systems
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  • Review the concept of moments in physics, specifically the equation Ʃ Of Clockwise Moments = Ʃ Of Anti-Clockwise Moments
  • Learn how to incorporate all forces acting on a system when calculating moments
  • Study the effects of distance on moment calculations in static systems
  • Practice solving problems involving multiple forces and pivots
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Students studying physics, particularly those focusing on mechanics, as well as engineers and anyone involved in structural analysis or force calculations.

isigne
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How do I find the force of A and B. I am taking moments at A but I am not getting the correct answer. (More Details below of attempt)

Homework Equations



Ʃ Of Clockwise Moments = Ʃ Of Anti-Clockwise Moments
Ʃ Of Upward Force = Ʃ Of Downward Force

The Attempt at a Solution



(THIS IS WRONG BUT THIS IS MY ATTEMPT)

A => (3x2)+(5x5)+(12x2)= Bx11
=> 6 + 25 + 24 = B x 11
=> 55 = B x 11
=> 55/11 = B
=> 5 = bTHANKS FOR HELP, I was trying this weekend and I need some genius advice so when I get this question again, I will be able to do so :)
 
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isigne said:
A => (3x2)+(5x5)+(12x2)= Bx11
I assume you're using A as your pivot point.
(1) You neglected the moment due to the 2kN force at the left end.
(2) What's the distance between B and A?
 

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