1. The problem statement, all variables and given/known data The pulley system has a mechanical advantage of 3. You want to lift the box weighing 420N 6m above the ground. You pull 18m of rope with 140N of force. What is the work done? (Ignoring the angle) 2. Relevant equations Work=force*distance 3. The attempt at a solution I thought that since the box moved 6m, and you put in 140N of force, so 6* 140= 840J of work.