1. The problem statement, all variables and given/known data 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. 2. Relevant equations Newton's Second Law, I imagine; sigma F = mass*acceleration 3. 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!