1. The problem statement, all variables and given/known data I have a man who is 100kg and a barrel of bricks weighing at 220kg. The man is using a pulley to lower the bricks onto the ground however since they are much higher in weight he rapidly travels up. Then the bricks fall onto the ground and the barrel weighs 60kg since it's lighter than the man, he then rapidly goes down now. I have to find the acceleration of when the man is traveling up and the bricks are going down and when the man is going down and the barrel is going up. 2. Relevant equations Fnet = ma Fg = mg 3. The attempt at a solution For the man it would be: Fg=mg Fg= (100)(9.81) Fg=981N For the barrel full of bricks it would be: Fg= mg Fg= (220)(9.81) Fg= 2158.2N For the barrel that's empty it would be: Fg= mg Fg= (60)(9.81) Fg= 588.6N I am not quite sure what to do next. All I know is that I have to find acceleration of the barrel and man separately. I thought that I would have to use Fnet = Fg but then there is tension which I do not know. So then I tried to do: Fnet = ma Fg = ma but it does not work of course.