Question

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

by decreasing the amount of weight being lifted
by decreasing the amount of weight being lifted
by reducing the friction on the pulleys
by reducing the friction on the pulleys
by adding more pulleys to the system
by adding more pulleys to the system
by having a second person pulling on the rope

Answer 1

by reducing the friction on the pulleys