1. The problem statement, all variables and given/known data A window washer pulls herself up using a pulley-bucket apparatus. How hard must she pull downward to raise herself slowly at constant speed? The mass of the person plus the bucket is 75 kg. 2. Relevant equations F=ma 3. The attempt at a solution I don't know what I'm doing wrong. Is the force she has to pull downward not equal to the weight? I get (9.8)(75)=735N. It says use two sig figs and I've tried both 7.4x10^2 and 7.3x10^2 N. I hate mastering physics!