A pulley system is operating at only 50% efficiency. How could the efficiency be increased? (1 point)
Responses
by having a second person pulling on the rope
by having a second person pulling on the rope
by reducing the friction on the pulleys
by reducing the friction on the pulleys
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 adding more pulleys to the system. Another way to increase efficiency is by using lubrication on the pulleys to reduce friction.
1 answer