Force exerted on one object by another

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SUMMARY

The discussion focuses on calculating the force exerted by block 1 (m1 = 1.2 kg) on block 2 (m2 = 2.3 kg) in a system where the acceleration is 6.36 m/s² and the tension in the cord between blocks 1 and 3 is 22.27 N. Using Newton's Second Law (σF = mass * acceleration), participants explore the relationships between the blocks and the forces acting on them. A clear understanding of the setup involving blocks, ropes, and pulleys is essential for solving the problem effectively.

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Homework Statement


http://lon-capa.bsu.edu/res/brookscole/serway/College_Physics_7ed/serwaypictures/sf4_27.jpg

m1=1.2kg
m2=2.3kg
m3=3.1kg
a[of the system] determined to be = 6.36m/s^2
T[between the cord of 1-->3] determined to be =22.27N

Determine the force exerted by the number 1 block on the number 2 block.

Homework Equations


Newton's Second Law, I imagine; sigma F = mass*acceleration

The Attempt at a Solution


if the two were connected via a cable or something, I'd get how to do it; as stands, I'm not really sure. we've only went over this briefly, so I'm quite stumped.
any help would be appreciated, however!
 
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A clearer explanation of the setup of all blocks, ropes, and pulleys would be helpful.
 
I put up an image showing it, but it isn't displaying, now.
I'll put it up again.
http://img163.imageshack.us/img163/9191/sf427.jpg
 
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