1. The problem statement, all variables and given/known data A window washer pulls herself upward using the bucket-pulley apparatus: The mass of the person plus the bucket is 63 kg. (a) How hard must she pull downward to raise herself slowly at constant speed? 2. Relevant equations F = m(a) 3. The attempt at a solution I figured that since she wants to raise herself at constant speed, that makes her acceleration equal to zero. Which means Fnet=0=Ftension-Fgravity, so Ftension=Fgravity. F gravity=9.8(63)=617.4 N, but it says I have the wrong answer. Thanks in advance for the help.