PROBLEMS TO BE WRITTEN UP AND TURNED IN AT RECITATION

     This problem is due at your first recitation meeting after Mon 9/20.
     It should be written on a single sheet of paper (front and back), or
     if multiple sheets are used, staple them together.  For full credit, 
     the work must be neat, with clearly labeled free-body diagrams.  The 
     labels must be in BOTH words and symbols.  For each part, you must 
     BRIEFLY explain your strategy in words, as well as neatly showing 
     your physics equations and math, with proper units. (20 points total)
     
     FISHBANE - CHAPTER 4
     24. (The figure for this problem is Wolfson Fig. 5-36, on page 118; 
         but, the masses and the pushing force are different.)  A force of 
         magnitude 8.0 N pushes on a horizontally stacked set of blocks on 
         a frictionless surface with masses m1 = 2.0 kg, m2 = 3.0 kg, and 
         m3 = 4.0 kg.  (a) What is the acceleration of the stack?  (b) What 
         are the forces on block 1, as well as the net force on this block.  
         (c) Repeat part b for block 2.  (d) Repeat part b for block 3.
         (e) Repeat part b, but this time with the blocks stacked in 
         reverse order; that is, block 3 becomes the leftmost mass and 
         block 1 becomes the rightmost mass.