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I don't 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 he's getting lowered. So what now? Please help me through this problem, i don't have a book and have looked online for formulas and similar problems but can't find any.A 100 kg fireman is being lowered from a floor 10 meters above the ground by a rope whose breaking strength is 800 N. The fireman starts from rest and the person loewring the fireman knows that the 800 N limit must be adhered.

Draw a free body diagram showing all of the forces extered on the fireman.

What is the fireman velocity when he touches the ground?

The fireman moves 20 cm during his stopping. What is the average normal force exerted on the fireman during the stop?