1. The problem statement, all variables and given/known data http://gpschools.schoolwires.net/cms/lib05/MI01000971/Centricity/Domain/272/Chapter 5 MC 13.pdf It is problem 22 on page 7 of the document: A block of mass M1 on a horizontal table is connected to a hanging block of mass M2 by a string that passes over a pulley, as shown. The acceleration of the blocks is 0.6g. Assume that the friction and the mass of the string are negligible. 22. The ratio of masses M2 / M1 is (A)0.67 (B) 1.0 (C) 1.4 (D)1.5 (E) 1.6 [Note: Post edited by moderator to include the problem statement content in-post] 2. Relevant equations F=ma 3. The attempt at a solution OK. I know that this is a force system, and I would draw the free body diagrams for each and write out the equations for each block and solve. So I was able to get the tension T in the string to be 0.4 M2 * g. I was also able to get a=0.6 g. My numbers so far are correct. However, I am at a loss for finding the ratio of masses M2/M1. Could anyone help me, please? Thanks?