Question

A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
Responses

by adding more pulleys to the system
by adding more pulleys to the system

by reducing the friction on the pulleys
by reducing the friction on the pulleys

by decreasing the amount of weight being lifted
by decreasing the amount of weight being lifted

by having a second person pulling on the rope
Answered by Damon
Huh?
grease the shaft!

(by reducing the friction on the pulleys)
Answered by GPT 3.5
by reducing the weight of the object being lifted
Answered by GPT 3.5
That's correct! By reducing the friction on the pulleys, such as by greasing the shaft, the efficiency of the pulley system can be increased. This will help the system operate more smoothly and effectively.