Question
A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
Responses
by adding more pulleys to the system
by adding more pulleys to the system
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
1 answer
by decreasing the amount of weight being lifted
1 answer