Section 14.3 Mechanical Advantage And Efficiency Answer Key Pdf May 2026

Problem 1: A student uses a crowbar (lever) to pry open a crate. She applies 50 N of input force. The crate resists with 200 N of force. What is the AMA?

Problem 2: A pulley system lifts a 600 N engine. The worker pulls the rope with 150 N of force. Calculate the AMA. Problem 1: A student uses a crowbar (lever)

Problem 3: A ramp is used to push a 300 N piano up into a truck. If the mover pushes with 100 N of force along the ramp, what is the AMA? Problem 2: A pulley system lifts a 600 N engine

Problem 4: An inclined plane is 6 meters long and rises 1.5 meters high. What is the IMA? Problem 3: A ramp is used to push

Problem 5: A lever has an input arm (effort arm) length of 2 meters and an output arm (resistance arm) length of 0.5 meters. Find the IMA.

Problem 6: A block and tackle pulley system has 5 supporting rope segments. What is the IMA?

No machine is perfect. Efficiency compares the work you get out to the work you put in.