any of the basic mechanical devices, including the lever, wheel and axle, pulley, wedge, screw, and inclined plane, one or more of which are essential to any more complex machine
simple machine
simple machine 
A pulley is a simple machine.
The definition of a simple machine is a basic mechanical device.
An example of a simple machine is a pulley.
YourDictionary definition and usage example. Copyright © 2018 by LoveToKnow Corp
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simple machine
Webster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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"simple machine." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/simple-machine>.
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simple machine. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/simple-machine
simple machine
noun
Any of numerous basic devices that alter the magnitude or direction, or both, of an applied force, traditionally including the lever, wedge, inclined plane, wheel and axle, pulley, and screw.
THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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"simple machine." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/simple-machine>.
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simple machine. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/simple-machine
See under machine
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"simple machine." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/simple-machine>.
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simple machine. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/simple-machine
Noun
(plural simple machines)
- (physics) A device that only requires the application of a single force to work.
English Wiktionary. Available under CC-BY-SA license.
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"simple machine." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/simple-machine>.
APA Style
simple machine. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/simple-machine
