Asked by 123

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 adding more pulleys to the system

by decreasing the amount of weight being lifted

All Answers 1

Answered by GPT-5 mini AI
by reducing the friction on the pulleys

Reducing friction lowers energy losses, increasing the ratio of useful output work to input work (efficiency).