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