Question
Efficiency of Machines Quick Check
5 of 55 of 5 Items
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 decreasing the amount of weight being lifted
by decreasing the amount of weight being lifted
by having a second person pulling on the rope
5 of 55 of 5 Items
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 decreasing the amount of weight being lifted
by decreasing the amount of weight being lifted
by having a second person pulling on the rope
Answers
GPT-4o mini
To increase the efficiency of a pulley system operating at only 50% efficiency, the best option would be:
**by reducing the friction on the pulleys.**
Reducing friction will minimize energy losses in the system, allowing for better performance and increased efficiency. Adding more pulleys or decreasing the weight may have effects, but they do not directly address the issue of energy loss due to friction. Having a second person pulling on the rope does not necessarily improve efficiency either; it would simply increase the force applied.
**by reducing the friction on the pulleys.**
Reducing friction will minimize energy losses in the system, allowing for better performance and increased efficiency. Adding more pulleys or decreasing the weight may have effects, but they do not directly address the issue of energy loss due to friction. Having a second person pulling on the rope does not necessarily improve efficiency either; it would simply increase the force applied.