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