"a window washer pulls herself upward using the bucket-pulley apparatus. the mass of the person plus the bucket is 65 kg.

(a) how hard must she pull downward to raise herself slowly at constant speed?
(b) if she increases this force by 10%, what will her acceleration be?
"

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?