Question
A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
• by reducing the friction on the pulleys
• by having a second person pulling on the rope
• by decreasing the amount of weight being lifted
O by adding more pulleys to the system
• by reducing the friction on the pulleys
• by having a second person pulling on the rope
• by decreasing the amount of weight being lifted
O by adding more pulleys to the system
Answers
GPT-4o mini
The efficiency of a pulley system can be increased **by reducing the friction on the pulleys**. Reducing friction will allow for less energy to be lost as heat and improve the overall effectiveness of the system, thereby increasing efficiency.