1. The problem statement, all variables and given/known data The pulley is massless and frictionless. A massless inextensible string is attached to these masses: 1kg, 3 kg, and 8kg. The acceleration of gravity is 9.8m/s^2. What is the tension T1 in the string between the block with mass 1kg and the block with mass 3kg (on the left hand side of the pulley)? Picture of the problem: My freebody diagrams for the problem Fnet (1kg)= T1- Fg= ma T1= Fg +ma Fnet (3kg)= T2- T1- Fg= ma Other than assuming that T1, T2 and T3 are all the same, I don't really know where to go from there...I would really appreciate it if someone could point me in the right direction.