This question, from a previous A.P physics exam, was given as a homework problem. I am wondering if anybody could tell me if I am on the right track or totally wrong. Three blocks of masses 1.0, 2.0, and 4.0 kilograms are connected by mass less strings, one of which passes over a frictionless pulley of negligible mass, as shown above. Calculate each of the following. a. The acceleration of the 4 kilogram block b. The tension in the string supporting the 4 kilogram block c. The tension in the string connected to the l kilogram block (Sorry but I cant seem to get the pic on here- basically on one side of the pulley is a 4kg mass, and on the other side is a 2kg mass that is connected by a string to a 1kg mass) A. F=M*A F= (3kg)(9.8) F=29N 29N=(4kg)(a) A=7.25m/s^2 B. 29N ????? I basically got this calculation from above when finding the acceleration, but i am not sure if this is what they are looking for C. Ft=M*A Ft= (1kg)(7.25) Ft= 7.25N For some reason, I am really confused with this problem. Please help!!