Can I use method of sections anywhere?

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In summary, the conversation discusses finding the tension in a rope using the method of sections, but it is determined that using a free body diagram and applying Newton's laws for the equilibrium case is a simpler and more effective method.
  • #1
NoobeAtPhysics
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Homework Statement



Find the tension in the rope

t8mbrd.png


Homework Equations



F=ma

The Attempt at a Solution



I was wondering whether I could use method of sections in this problem to divide the two systems so that I could find the tension in the rope.

I have a strong feeling that I won't be able to.. why can't I?
 
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  • #2
You don't need the method of sections. You just need to draw a FBD for the bar BD and then write the equations of static equilibrium.
 
  • #3
NoobeAtPhysics said:

Homework Statement



Find the tension in the rope

t8mbrd.png


Homework Equations



F=ma

The Attempt at a Solution



I was wondering whether I could use method of sections in this problem to divide the two systems so that I could find the tension in the rope.

I have a strong feeling that I won't be able to.. why can't I?
What you are calling "method of sections" is more generally referred to as "free body diagram(FBD)". You can take a FBD anywhere, but is is simplest to take one that cuts throught the rope, then apply Newton's laws for the equilibrium case (a = ??) .
 

FAQ: Can I use method of sections anywhere?

Can I use the method of sections for any type of problem?

No, the method of sections is specifically used for analyzing truss structures. It may not be applicable for other types of problems.

Do I need to know the entire structure to use the method of sections?

No, the method of sections only requires you to analyze a specific section of the structure. You do not need to have knowledge of the entire structure.

Is the method of sections always accurate?

The method of sections provides accurate results when used correctly. However, it may not be suitable for all types of truss structures and may require additional methods for more complex problems.

Can I use the method of sections for structures with multiple loads?

Yes, the method of sections can be used for structures with multiple loads. However, it may require multiple section analyses to accurately determine the forces in each member.

Are there any limitations to using the method of sections?

The method of sections is limited to analyzing statically determinate structures only. For statically indeterminate structures, additional methods such as the method of joints or virtual work method may be required.

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