A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
Responses
by reducing the friction on the pulleys
by reducing the friction on the pulleys
by having a second person pulling on the rope
by having a second person pulling on the rope
by decreasing the amount of weight being lifted
by decreasing the amount of weight being lifted
by adding more pulleys to the system
1 answer
by reducing the friction on the pulleys