(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In Figure 5-50a, a constant horizontal force F->a is applied to block A, which pushes against block B with a 23.0 N force directed horizontally to the right. In Figure 5-48b, the same force is applied to block B; now block A pushes on block B with a 11.0 N force directed horizontally to the left. The blocks have a combined mass of 12.0 kg. What are the magnitudes of (a) their acceleration in Figure 5-50a and (b) force F->a?

2. Relevant equations

Fnet=m*a

http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c05/fig05_50.gif

3. The attempt at a solution

Ok so for block scenario one I have to find the Fnet to solve for m*a.

So I have Fnet= sum of forces=m*a

for case two

Fnet= sum of forces =m*a

So I have

12*a= Fapp+23-F_AB

12*a=Fapp-11+F_AB

I am stuck right here any tips?

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