In this simulation a string is attached to a hanging mass at one end, passes over a fixed pulley and is then connected to a moveable pulley. A socond string passes over this pulley and it has a hanging mass attached at each end.
When the system is released you need to calculate the accelerations of mass 1 and the moveable pulley and of masses 2 and 3 and sometimes the tensions in the strings.
Select the masses (press "Submit" each time).
Press "Release Mass".
To check your answers click on the Show Answers button.