Asked by xen

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

by adding more pulleys to the system

All Answers 1

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

Reducing friction lowers energy losses (heat) in the system, so a greater fraction of input work becomes useful output work, increasing efficiency.