1. The problem statement, all variables and given/known data Stan raises a 1200 N piano a distance of 5.00 m with pulleys and pulls on 20 m of rope. What is input work and mechanical advantage? 2. Relevant equations Wo=Wi MA=Fr/Fe 3. The attempt at a solution I calculated output work as 1200N*5.00m=6.00*10^3 and my book says Wo=Wi; but the answer for input work is 6.80*10^3. I'm not sure what the resistance and effort forces would be. Any help would be appreciated!