I got this problem as part of a long homework packet, was able to figure out all the problems but the last 3, so here is one of them, but i dont have a book. I really have no idea on how to approach this problem, so i was hoping someone could lead me through it and help me figure it out... I dont really know where to start, not sure of the equation i need to find the fireman velocity and how to use the given numbers. As forthe diagram, i drew one showing 100kg of his wieght pushing down, the ropes strength which is 800N while hes getting lowered. So what now? Please help me through this problem, i dont have a book and have looked online for formulas and similar problems but cant find any.