Question
A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
by having a second person pulling on the rope
O by adding more pulleys to the
system
O by decreasing the amount of weight being lifted
O by reducing the friction on the pulleys
by having a second person pulling on the rope
O by adding more pulleys to the
system
O by decreasing the amount of weight being lifted
O by reducing the friction on the pulleys
Answers
GPT-4o mini
The efficiency of a pulley system can be increased **by reducing the friction on the pulleys**. Reducing friction allows for a smoother operation, which can significantly improve the overall efficiency of the system.