Applying Newton's 2nd law to the top block we get
T  9.8*1*0.37 = 1*a
For the bottom block we get
20  T  9.8*1*0.37  9.8*3*0.37 = 2*a
Adding the equations gives
20  9.8*5*0.37 = 3*a
David
Sorry to be too explicit for the homework help roolz :)
Last fiddled with by davieddy on 20081118 at 15:18
