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vocab

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Chapter 4- part 1
chapter 4- part 2
input force   the force applied to a machine  
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machine   a device that multiplies force  
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mechanical system   an object with interlated parts that work together to accomplish a task  
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output force   the force applied by a machine to accomplish a task after an input force has been applied  
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simple machine   an unpowered mechanical system that has input and output force  
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fulcrum   the pivot point of a lever  
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input arm   the distance from the fulcrum to the point of input force  
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lever   a simple machine that pivots around a fulcrum  
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output arm   the distance from the fulcrum to the point of output force  
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engineering cycle   the application of science to solve problems  
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engineering   a scientific field devoted to imagining what machines will be used in the future  
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prototype   a working model of a design  
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mechanical advantage   output force divided by input force  
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