Dynamics Boxes 2

Please see picture.
Here is my method. Is it good?
T=m2g
m2g=m1a
a=m2g/m1
-n+Fpush=Ma. (n=normal force of m2 on M).
n=m2a=(m2)^2g/(m1a)

-n+Fpush=Ma.
Fpush=Ma+(m2)^2g/m

Attached Images
File Type: png Screen Shot 2014-04-15 at 8.47.25 PM.png (63.1 KB)

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