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ps chapter 5 vocab

section 1, 2, and 3

QuestionAnswer
Transfer of energy that occurs when a force makes an object move; measured in joules. Work
Amount of work done, or the amount of energy transferred, divided by the time required to do the work or transfer the energy; measured in watts. Power
Device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied. Machine
The force that is applied to the machine. Input Force
The force applied by the machine. Output Force
Ratio of the output force exerted by a machine to the input force applied to the machine. Mechanical Advantage
Ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage. Efficiency
Machine that does work with only one movement--lever, pulley, wheel, and axle, inclined plane, screw, and wedge. Simple Machine
Simple machine consisting of a bar free to pivot about a fixed point called the fulcrum. Lever
Pulley
Wheel and Axle
Inclined Plane
Screw
Wedge
Compound Machine
Created by: maurisio
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