Question
a) In raising a 4800 N piano with a pulley system, the workers note that for every 2 m of rope pulled down, the piano rises 0.3 m. Ideally, how much force is required to lift the piano?
(b) If the workers actually pull with 2500 N of force to lift the piano, what is the efficiency of the pulley system?
%
MechanicalA= 2/.3
Force= 4800/MechA
Actual force*(efficiency)= forceneededabove
(b) If the workers actually pull with 2500 N of force to lift the piano, what is the efficiency of the pulley system?
%
MechanicalA= 2/.3
Force= 4800/MechA
Actual force*(efficiency)= forceneededabove