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Get the Gizmo ready: Select the 1 fixed pulley configuration.Set the Weightto 60 N and Efficiency 100%.You will need a calculator for this activity.to Question: What is the mechanical advantage of each pulley system?
Predict: How will adding more pulleys affect the input force needed to lift the load? Gather data: With the Weightset to 60 N and the Efficiency set to 100%, find the minimum input force needed to lift the load with each system. Fill in the table below. Include units.Pulley systemWeight (N)Minimum input force (N)1 fixed60 N61 N1 fixed, 1 moveable60 N31N2 fixed, 2 moveable60 N16N3 fixed, 3 moveable60 N11NSummarize: How does the minimum input change as you add more pulleys to the system?Adding more alleys means the minimum input force will decrease Analyze: Compare the input force to the number of pulleys in each system. Do you see a pattern? If so, describe it: The pattern is half the pervious number.Apply: How much force do you think would be needed to lift a 100-N load with a pulley system composed of two fixed and two moveable pulleys? __27N________________________Check your answer with the Gizmo. How much force was actually needed? ______28N_______(Activity A continued on next page)