How Can I Find Moments for My Homework?

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In summary, the conversation discusses how to accurately calculate the distances from the moment using the equation M_A = Fd. The individual has tried summing all forces and their directions, as well as summing all forces from point G (center of gravity), but has not yet found the exact answer. The importance of including the force acting through the center of gravity in the calculations is also mentioned, as it affects the reaction force at the right end. It is suggested to sum moments about the right end to avoid the need for this force in the calculations.
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suspenc3
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Homework Statement


See attached file


Homework Equations


[tex]M_A = Fd[/tex]


The Attempt at a Solution


I using the above equation..just summing all of the forces and their directions but I keep getting the wrong answer(distances from the moment). I also tried summing all the forces from point G (Center of gravity). This gave me a close answer but not exact. How should I go about doing this?
 

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  • #2
you said your answer is close to the answer given right?well i was wondering maybe you left out the 0.5m in the claculation?
 
  • #3
Does the force acting through the Center of gravity come into play?
 
  • #4
suspenc3 said:
Does the force acting through the Center of gravity come into play?
Yes. It is easiest to sum moments about the right end, and set them equal to 0. If you sum moments about G, you still need to know the force through G in order to calculate the reaction force at the right end, which will then contribute to the moment about G. When you sum moments about the right end, you don't need to know that force to do so, since it doesn't contribute to the torque.
 

1. What are moments in scientific research?

Moments in scientific research refer to significant events or breakthroughs that have a significant impact on the field. These can include new discoveries, advancements in technology, or paradigm shifts in understanding.

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