Can I use method of sections anywhere?

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The discussion centers on the applicability of the method of sections for finding the tension in a rope. It is clarified that using a free body diagram (FBD) is more appropriate for this problem rather than the method of sections. The importance of applying Newton's laws in the context of static equilibrium is emphasized. A FBD should ideally cut through the rope to simplify the analysis. Overall, the method of sections is not necessary for solving this particular problem.
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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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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.
 
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 = ??) .
 

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