1. The problem statement, all variables and given/known data The pulley can rotate and has no friction. Block [itex]m_2[/itex] is twice as big as [itex]m_1[/itex] Find the tensions, [itex]T_1, T_2, T_3[/itex] 2. Relevant equations Newton's second law 3. The attempt at a solution Tension 1: By creating a free body diagram only for the block, I got with Newton's second law: [itex]T_1-mg=ma[/itex] [itex]T_1=m(a+g)[/itex] Tension 2: [itex]T_2-2mg=ma[/itex] [itex]T_2=m(a+2g)[/itex] Tension 3: [itex]T_3-T_1-T_2=ma[/itex] Inserting above values for the other tensions: [itex]T_3=ma+m(a+g)+m(a+2g)[/itex] [itex]T_3=3m(a+g)[/itex] Did I solve this correctly? What about the acceleration? Can I do anything about that?